Piston Seals

Piston seal maintain sealing contact in sliding motion between the piston and cylinder bore.

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hydraulic cylinder piston seal

Piston Seals

Differential pressures acting on the piston to extend or retract the piston rod can be in excess of 400 bar (5,800 psi). The pressure acting on the piston seal increases contact forces between the piston and cylinder surface. Therefore the surface properties of the sealing surfaces are critical to proper seal performance.

Piston seals are typically classified into single acting (pressure acting on one side only) and double acting (pressure acting on either side) seals.

Sealing Australia stocks the following profiles:

GH & GHM: Glide ring type piston seals

GH and GHM profiles have a nitrile (NBR) rubber o’ring energiser and a bronze filled PTFE sealing element. Square ring and Viton energiser are available on request. There profiles are suitable for pressures up to 400 bar (5,800 psi) and are available in metric sizes. Some metric sizes fit seal housing in accordance to ISO 7425-1.

  • Material: TMB/NBR (TPU seal element also available upon request)
  • Pressure: 400 bar (5,800psi)
  • Speed: ≤1 m/s (3.2 ft/s)
  • Classification: Light to medium duty
  • Sizing: Metric and Imperial
GH-&-GHM-Glide-ring-type-piston-seals

GHM metric glide ring type piston seals

(D) 10 to 63mm: (R) max= 0.5
(D) 63mm and over: (R) max= 0.9
Part No(D) ± H9(d) ± h9(L) ±0.05(C) min
GHM-10*5.1*2.210.05.12.23.0
GHM-12*7.1*2.212.07.12.23.0
GHM-15*7.5*3.215.07.53.25.0
GHM-16*8.5*3.216.08.53.25.0
GHM-18*10.5*3.218.010.53.25.0
GHM-20*12.5*3.220.012.53.25.0
GHM-22*14.5*3.222.014.53.25.0
GHM-25*17.5*3.225.017.53.25.0
GHM-28*20.5*3.228.020.53.25.0
GHM-30*22.5*3.530.022.53.25.0
GHM-32*24.5*3.232.024.53.25.0
GHM-35*27.5*3.235.027.53.25.0
GHM-36*28.5*3.236.028.53.25.0
GHM-40*29*4.240.029.04.27.0
GHM-40*32.5*3.240.032.53.25.0
GHM-42*31*4.242.031.04.27.0
GHM-45*34*4.245.034.04.27.0
GHM-48*37*4.248.037.04.27.0
GHM-50*39*4.250.039.04.27.0
GHM-55*44*4.255.044.04.27.0
GHM-60*49*4.260.049.04.27.0
GHM-63*52*4.263.052.04.27.0
GHM-65*54*4.265.054.04.27.0
GHM-70*54.5*6.370.054.56.310.0
GHM-70*59*4.270.059.04.27.0
GHM-75*59.5*6.375.059.56.310.0
GHM-75*64*4.275.064.04.27.0
GHM-80*59*8.180.059.08.112.0
GHM-80*64.5*6.380.064.56.310.0
GHM-80*69*4.280.069.04.27.0
GHM-85*64*8.185.064.08.112.0
GHM-85*69.5*6.385.069.56.310.0
GHM-90*69*8.190.069.08.112.0
GHM-90*74.5*6.390.074.56.310.0
GHM-95*74*8.195.074.08.112.0
GHM-95*79.5*6.395.079.56.310.0
GHM-100*79*8.1100.079.08.112.0
GHM-100*84.5*6.3100.084.56.310.0
GHM-105*89.5*6.3105.089.56.310.0
GHM-110*89*8.1110.089.08.112.0
GHM-110*94.5*6.3110.094.56.310.0
GHM-115*99.5*6.3115.099.56.310.0
GHM-120*99*8.1120.099.08.112.0
GHM-120*104.5*6.3120.0104.56.310.0
GHM-125*104*8.1125.0104.08.112.0
GHM-125*109.5*6.3125.0109.56.310.0
GHM-130*109*8.1130.0109.08.112.0
GHM-130*114.5*6.3130.0114.56.310.0
GHM-135*114*8.1135.0114.08.110.0
GHM-140*119*8.1140.0119.08.112.0
GHM-145*124*8.1145.0124.08.112.0
GHM-150*129*8.1150.0129.08.112.0
GHM-155*134*8.1155.0134.08.112.0
GHM-160*139*8.1160.0139.08.112.0
GHM-165*144*8.1165.0144.08.112.0
GHM-170*149*8.1170.0149.08.112.0
GHM-180*159*8.1180.0159.08.112.0
GHM-190*169*8.1190.0169.08.112.0
GHM-200*179*8.1200.0179.08.112.0
GHM-210*189*8.1210.0189.08.112.0
GHM-220*199*8.1220.0199.08.112.0
GHM-230*209*8.1230.0209.08.112.0
GHM-240*219*8.1240.0219.08.112.0
GHM-250*229*8.1250.0229.08.112.0
GHM-260*239*8.1260.0239.08.112.0
GHM-280*259*8.1280.0259.08.112.0
GHM-300*279*8.1300.0279.08.112.0
GHM-320*299*8.1320.0299.08.112.0
GHM-340*315.5*8.1340.0315.58.116.0
GHM-350*325.5*8.1350.0325.58.116.0
GHM-360*335.5*8.1360.0335.58.116.0
GHM-370*345.5*8.1370.0345.58.116.0
GHM-380*355.5*8.1380.0355.58.116.0
GHM-400*375.5*8.1400.0375.58.116.0
GHM-500*475.5*8.1500.0475.58.116.0

GH Imperial glide ring type piston seals

GH0A: (R) max= 0.015 / (C) min = 0.080
GH0D: (R) max= 0.015 / (C) min = 0.100
GH1x: (R) max= 0.015 / (C) min = 0.125
GH2x: (R) max= 0.015 / (C) min = 0.140
GH3x: (R) max= 0.025 / (C) min = 0.200
GH4x: (R) max= 0.035 / (C) min = 0.250
Part No(D)±(d)±(L) ±.002
GH0D-5000.500+.0020.240±.0020.083
GH0A-5000.500+.0020.326±.0010.083
GH0D-5620.562+.0020.302±.0020.083
GH0A-5620.562+.0020.388±.0010.083
GH0D-6250.625+.0020.625±.0020.083
GH0A-6250.625+.0010.451±.0010.083
GH1A-6870.687+.0020.389±.0010.128
GH0D-6870.687+.0020.427±.0020.083
GH0A-6870.687+.0020.513±.0010.083
GH1A-7500.750+.0020.452±.0010.128
GH0D-7500.750+.0020.490±.0020.083
GH0A-7500.750+.0020.576±.0010.083
GH1A-8120.812+.0020.514±.0010.128
GH0D-8120.812+.0020.552±.0020.083
GH0A-8120.812+.0020.638±.0020.083
GH1A-8750.875+.0020.577±.0010.128
GH0D-8750.875+.0020.615±.0020.083
GH0A-8750.875+.0020.701±.0010.083
GH1A-9370.937+.0020.639±.0010.128
GH0D-9370.937+.0020.677±.0020.083
GH0A-9370.937+.0020.763±.0010.083
GH1A-10001.000+.0020.702±.0010.128
GH0D-10001.000+.0020.740±.0020.083
GH0A-10001.000+.0020.826±.0010.083
GH1A-10621.062+.0020.764±.0010.128
GH0D-10621.062+.0020.802±.0020.083
GH0A-10621.062+.0020.888±.0010.083
GH1A-11251.125+.0020.827±.0010.128
GH0D-11251.125+.0020.865±.0020.083
GH0A-11251.125+.0020.951±.0010.083
GH1A-11871.187+.0020.889±.0010.128
GH0D-11871.187+.0020.927±.0020.083
GH0A-11871.187+.0021.013±.0010.083
GH1A-12501.250+.0020.952±.0010.128
GH0D-12501.250+.0020.990±.0020.083
GH0A-12501.250+.0021.076±.0010.083
GH1A-13121.312+.0021.014±.0010.128
GH0D-13121.312+.0021.052±.0020.083
GH0A-13121.312+.0021.138±.0010.083
GH1A-13751.375+.0021.077±.0010.128
GH0D-13751.375+.0021.115±.0020.083
GH0A-13751.375+.0021.201±.0010.083
GH1A-14371.437+.0021.139±.0010.128
GH0D-14371.437+.0021.177±.0020.083
GH0A-14371.437+.0021.263±.0010.083
GH1A-15001.500+.0021.202±.0010.128
GH0D-15001.500+.0021.240±.0020.083
GH0A-15001.500+.0021.326±.0010.083
GH2A-15621.562+.0021.138±.0020.168
GH1D-15621.562+.0021.170±.0020.122
GH1A-15621.562+.0021.264±.0010.128
GH2A-16251.625+.0021.201±.0020.168
GH1D-16251.625+.0021.233±.0020.122
GH1A-16251.625+.0021.327±.0010.128
GH2A-16871.687+.0021.263±.0020.168
GH1D-16871.687+.0021.295±.0020.122
GH1A-16871.687+.0021.389±.0010.128
GH2A-17501.750+.0021.326±.0020.168
GH1D-17501.750+.0021.358±.0020.122
GH1A-17501.750+.0021.452±.0010.128
GH2A-18121.812+.0021.388±.0020.168
GH1D-18121.812+.0021.420±.0020.122
GH1A-18121.812+.0021.514±.0010.128
GH2A-18751.875+.0021.451±.0020.168
GH1D-18751.875+.0021.483±.0020.122
GH1A-18751.875+.0021.577±.0010.128
GH2A-19371.937+.0021.513±.0020.168
GH1D-19371.937+.0021.545±.0020.122
GH1A-19371.937+.0021.639±.0010.128
GH2A-20002.000+.0021.576±.0020.168
GH1D-20002.000+.0021.608±.0020.129
GH1A-20002.000+.0021.702±.0010.128
GH2A-21252.000+.0021.701±.0020.168
GH1D-21252.125+.0021.733±.0020.129
GH1A-21252.125+.0021.827±.0010.128
GH2A-22502.250+.0021.826±.0020.168
GH1D-22502.250+.0021.858±.0020.129
GH1A-22502.250+.0021.952±.0010.128
GH2A-23752.375+.0021.951±.0020.168
GH1D-23752.375+.0021.983±.0020.129
GH1A-23752.375+.0022.077±.0010.128
GH2A-25002.500+.0022.076±.0020.168
GH1D-25002.500+.0022.108±.0020.129
GH1A-25002.500+.0022.202±.0010.128
GH2A-26252.625+.0022.201±.0020.168
GH1D-26252.625+.0022.233±.0020.129
GH1A-26252.625+.0022.327±.0010.128
GH2A-27502.750+.0022.326±.0020.168
GH1D-27502.750+.0022.358±.0020.129
GH1A-27502.750+.0022.452±.0010.128
GH2A-28752.875+.0022.451±.0020.168
GH1D-28752.875+.0022.483±.0020.129
GH1A-28752.875+.0022.577±.0010.128
GH2A-30003.000+.0022.576±.0020.168
GH1D-30003.000+.0022.608±.0020.129
GH1A-30003.000+.0022.702±.0010.128
GH3A-31253.125+.0022.509±.0030.249
GH2A-31253.125+.0022.701±.0020.168
GH1D-31253.125+.0032.733±.0020.129
GH3A-32503.250+.0022.634±.0030.249
GH2A-32503.250+.0022.826±.0020.168
GH1D-32503.250+.0032.858±.0020.129
GH3A-33753.375+.0022.759±.0030.249
GH2A-33753.375+.0022.951±.0020.168
GH1D-33753.375+.0032.983±.0020.129
GH3A-35003.500+.0022.884±.0030.249
GH2A-35003.500+.0023.076±.0020.168
GH1D-35003.500+.0033.108±.0020.129
GH3A-36253.625+.0023.009±.0030.249
GH2A-36253.625+.0023.201±.0020.168
GH1D-36253.625+.0033.233±.0020.129
GH3A-37503.750+.0023.134±.0030.249
GH2A-37503.750+.0023.326±.0020.168
GH1D-37503.750+.0033.358±.0020.129
GH3A-38753.875+.0023.259±.0030.249
GH2A-38753.875+.0023.451±.0020.168
GH1D-38753.875+.0023.483±.0020.129
GH3A-40004.000+.0023.384±.0030.249
GH2A-40004.000+.0023.576±.0020.168
GH1D-40004.000+.0033.608±.0020.129
GH3A-41254.125+.0023.509±.0030.249
GH2A-41254.125+.0023.701±.0020.168
GH1D-41254.125+.0033.733±.0020.129
GH3A-42504.250+.0023.634±.0030.249
GH2A-42504.250+.0023.826±.0020.168
GH1D-42504.250+.0033.858±.0020.129
GH3A-43754.375+.0023.759±.0030.249
GH2A-43754.375+.0023.951±.0020.168
GH1D-43754.375+.0033.983±.0020.129
GH3A-45004.500+.0023.884±.0030.249
GH2A-45004.500+.0024.076±.0020.168
GH1D-45004.500+.0034.108±.0020.129
GH3A-46254.625+.0024.009±.0030.249
GH2A-46254.625+.0024.201±.0020.168
GH1D-46254.625+.0034.233±.0020.129
GH3A-47504.750+.0024.134±.0030.249
GH2A-47504.750+.0024.326±.0020.168
GH1D-47504.750+.0034.358±.0020.129
GH3A-48754.875+.0024.259±.0030.249
GH2A-48754.875+.0024.451±.0020.168
GH1D-48754.875+.0024.483±.0020.129
GH3A-50005.000+.0024.384±.0030.249
GH2A-50005.000+.0024.576±.0020.168
GH1D-50005.000+.0034.608±.0020.129
GH3A-51255.125+.0024.509±.0030.249
GH2A-51255.125+.0024.701±.0020.168
GH1D-51255.125+.0034.733±.0020.129
GH4A-52505.250+.0024.420±.0040.322
GH3A-52505.250+.0024.634±.0030.249
GH2A-52505.250+.0034.826±.0020.168
GH1D-52505.250+.0034.858±.0020.129
GH4A-53755.375+.0024.545±.0040.322
GH3A-53755.375+.0024.759±.0030.249
GH2A-53755.375+.0034.951±.0020.168
GH1D-53755.375+.0044.983±.0020.129
GH4A-55005.500+.0024.670±.0040.322
GH3A-55005.500+.0024.884±.0030.249
GH2A-55005.500+.0035.076±.0020.168
GH1D-55005.500+.0045.108±.0020.129
GH4A-56255.625+.0034.795±.0040.322
GH3A-56255.625+.0035.009±.0030.249
GH2D-56255.625+.0045.107±.0040.159
GH4A-57505.750+.0034.920±.0040.322
GH3A-57505.750+.0035.134±.0030.249
GH2D-57505.750+.0045.232±.0040.159
GH4A-58755.875+.0035.045±.0040.322
GH3A-58755.875+.0035.259±.0030.249
GH2D-58755.875+.0045.357±.0040.159
GH4A-60006.000+.0035.170±.0040.322
GH3A-60006.000+.0035.384±.0030.249
GH2D-60006.000+.0045.482±.0040.159
GH4A-61256.125+.0035.295±.0040.322
GH3A-61256.125+.0035.509±.0030.249
GH2D-61256.125+.0045.607±.0040.159
GH4A-62506.250+.0035.420±.0040.322
GH3A-62506.250+.0035.634±.0030.249
GH2D-62506.250+.0045.732±.0040.159
GH4A-63756.375+.0035.545±.0040.322
GH3A-63756.375+.0035.759±.0030.249
GH2D-63756.375+.0045.857±.0040.159
GH4A-65006.500+.0035.670±.0040.322
GH3A-65006.500+.0035.884±.0030.249
GH2D-65006.500+.0045.982±.0040.159
GH4A-67506.750+.0035.920±.0040.322
GH3A-67506.750+.0036.134±.0030.249
GH2D-67506.750+.0046.232±.0040.159
GH4A-70007.000+.0036.170±.0040.322
GH3A-7000-7.000+.0036.384±.0030.249
GH2D-70007.000+.0046.482±.0040.159
GH4A-72507.250+.0036.420±.0040.322
GH3A-72507.250+.0036.634±.0030.249
GH2D-72507.250+.0046.732±.0040.159
GH4A-75007.500+.0036.670±.0040.322
GH3A-75007.500+.0036.884±.0030.249
GH2D-75007.500+.0046.982±.0040.159
GH4A-77507.750+.0036.920±.0040.322
GH3A-77507.750+.0037.134±.0030.249
GH2D-77507.750+.0047.232±.0040.159
GH4A-80008.000+.0037.170±.0040.322
GH3A-80008.000+.0037.384±.0030.249
GH2D-80008.000+.0047.482±.0040.159
GH4A-82508.250+.0037.420±.0040.322
GH3A-82508.250+.0037.634±.0030.249
GH2D-82508.250+.0047.732±.0040.159
GH4A-85008.500+.0037.670±.0040.322
GH3A-85008.500+.0037.884±.0040.249
GH2D-85008.500+.0047.982±.0040.159
GH4A-87508.750+.0047.920±.0040.322
GH4A-90009.000+.0038.170±.0040.322
GH3A-90009.000+.0038.384±.0030.249
GH2D-90009.000+.0048.482±.0040.159
GH4A-95009.500+.0038.670±.0040.322
GH3A-95009.500+.0038.884±.0030.249
GH2D-95009.500+.0048.982±.0040.159
GH4A-97509.750+.0048.920±.0040.322
GH4A-1000010.000+.0039.170±.0040.322
GH3A-1000010.000+.0039.384±.0030.249
GH2D-1000010.000+.0049.482±.0040.159
GH4A-1050010.500+.0039.670±.0040.322
GH3A-1050010.500+.0039.884±.0030.249
GH2D-1050010.500+.0049.982±.0040.159
GH4A-1100011.000+.00310.170±.0040.322
GH3A-1100011.000+.00310.384±.0030.249
GH2D-1100011.000+.00410.482±.0040.159
GH4A-1150011.500+.00310.670±.0040.322
GH3A-1150011.500+.00310.884±.0030.249
GH2D-1150011.500+.00410.982±.0040.159
GH4A-1200012.000+.00311.170±.0040.322
GH3A-1200012.000+.00311.384±.0030.249
GH2D-1200012.000+.00411.482±.0040.159
GH4A-1250012.500+.00411.670±.0040.322
GH4A-1300013.000+.00412.170±.0040.322
GH4A-1350013.500+.00412.670±.0040.322
GH4A-1400014.000+.00413.170±.0040.322
GH4A-1450014.500+.00413.670±.0040.322
GH4A-1500015.000+.00414.170±.0040.322
GH4A-1550015.500+.00414.6780±.0040.322
GH4A-1600016.000+.00315.170±.0040.322

MD-L: 5 piece double acting piston seals

MD-L profiles have a nitrile rubber sealing element with polyester thermoplastic elastomer anti-extrusion rings, which incorporate polyacetal guide rings. The sealing element serves as a slide ring and also seals statically against the seal groove. The anti-extrusion rings support and protect the sealing element against gap extrusion. Both the guide and anti-extrusion rings are split to ease installation. MD-L profiles are suitable for pressures for pressures up to 250 bar (3,625 psi) and are available in metric and imperial sizes. Some metric sizes fit seal housings in accordance to ISO 6547.

Material: NBR/POM/TPC

  • Pressure: 250 bar (3,625psi)
  • Speed: ≤1 m/s (3.2 ft/s)
  • Classification: Light to medium duty
  • Sizing: Metric and Imperial

2.MD-L-profile-piston-seals-metric-sizes

MD-L Metric

Part No(D) ±H9(d) ±h9(L₁) +0.1/+0.35(L₂) +0.2(D₁) ±h9(D₂) ±h11(R) max(C) min
25*15*12.4 MD-L25.015.012.44.021.023.00.42.5
25*16*13.5 MD-L25.016.013.52.122.024.00.42.5
30*21*13.5 MD-L30.021.013.52.127.029.00.42.5
32*22*12.5 MD-L32.022.012.54.029.031.00.42.5
32*22*15.5 MD-L32.022.015.52.628.031.00.42.5
32*22*16.4 MD-L32.022.016.46.3528.530.50.42.5
32*24*10 MD-L32.024.010.04.029.031.00.42.0
32*24*15.5 MD-L32.024.015.53.228.031.40.42.0
35*25*15.5 MD-L35.025.015.52.631.034.00.42.5
35*25*16.4 MD-L35.025.016.46.431.433.50.42.5
40*24*18.4 MD-L40.024.018.46.435.438.70.44.0
40*26*15.5 MD-L40.026.015.52.636.039.00.44.0
40*30*12.4 MD-L40.030.012.44.036.038.00.42.5
40*30*12.5 MD-L40.030.012.54.037.039.00.42.5
40*30*16.4 MD-L40.030.016.46.435.438.70.42.5
40*32*10 MD-L40.032.010.04.037.039.00.42.0
40*32*15.5 MD-L40.032.015.53.236.039.40.42.0
45*29*18.4 MD-L45.029.018.46.440.443.70.44.0
45*31*15.5 MD-L45.031.015.52.641.044.00.44.0
45*37*15.5 MD-L45.037.015.53.241.043.50.42.0
45*35*16.4 MD-L45.035.016.46.3540.443.50.42.5
50*34*18.4 MD-L50.034.018.46.445.448.70.44.0
50*34*20.5 MD-L50.034.020.53.146.049.00.45.0
50*35*20 MD-L50.035.020.05.046.048.50.44.0
50*38*20.5 MD-L50.038.020.54.246.049.40.43.0
50*40*12.5 MD-L50.040.012.54.047.049.00.42.5
55*39*18.4 MD-L55.039.018.46.450.453.70.44.0
55*39*20.5 MD-L55.039.020.53.151.054.00.44.0
55*45*12.5 MD-L55.045.012.54.052.054.00.42.5
60*44*18.4 MD-L60.044.018.46.455.458.70.44.0
60*44*20.5 MD-L60.044.020.53.156.059.00.45.0
60*48*20.5 MD-L60.048.020.54.256.059.400.43.0
63*47*18.4 MD-L63.047.018.46.458.461.50.44.0
63*47*19.4 MD-L63.047.019.46.458.461.70.44.0
63*47*20.5 MD-L63.047.020.53.159.062.00.44.0
63*48*20 MD-L63.048.020.05.059.061.50.44.0
63*51*20.5 MD-L63.051.020.54.259.062.40.43.0
63*53*12.5 MD-L63.053.012.54.060.062.00.42.5
65*49*20.5 MD-L65.049.020.53.160.453.70.44.0
65*50*18.4 MD-L65.050.018.46.460.463.50.44.0
70*50*22.4 MD-L70.050.022.46.464.268.30.85.0
70*54*20.5 MD-L70.054.020.53.166.069.00.44.0
70*55*20 MD-L70.055.020.05.066.068.50.44.0
70*58*20.5 MD-L70.058.020.54.266.069.40.43.0
75*55*22.4 MD-L75.055.022.46.469.273.30.85.0
75*59*20.5 MD-L75.059.020.53.171.074.00.43.0
80*60*22.4 MD-L80.060.022.46.474.278.30.85.0
80*60*25 MD-L80.060.025.06.375.078.00.85.0
80*62*22.5 MD-L80.062.022.53.676.079.00.44.5
80*65*20 MD-L80.065.020.05.076.078.50.44.0
80*66*22.5 MD-L80.066.022.55.276.079.40.43.5
85*65*22.4 MD-L85.065.022.46.479.283.30.85.0
90*70*22.4 MD-L90.070.022.46.484.288.30.85.0
90*72*22.5 MD-L90.072.022.53.686.089.00.44.5
90*75*20 MD-L90.075.020.05.086.088.50.44.0
95*75*22.4 MD-L95.075.022.46.489.093.30.85.0
100*75*22.4 MD-L100.075.022.46.493.298.00.86.5
100*80*25 MD-L100.080.025.06.395.098.00.85.0
100*82*22.5 MD-L100.082.022.53.696.099.00.85.0
100-85*20 MD-L100.085.020.05.096.098.50.44.0
100*86*22.5 MD-L100.086.022.55.296.099.40.43.5
105*92.5*14 MD-L105.092.514.05.299.0103.50.43.5
110*85*22.4 MD-L110.085.022.46.4103.1108.00.86.5
110*85*25.4 MD-L110.085.025.46.4103.1108.00.86.5
110*92*22.5 MD-L110.092.022.53.6106.0109.00.85.0
110*95*20 MD-L110.095.020.05.0106.0108.50.44.0
110*96*22.5 MD-L110.096.022.55.2106.0109.40.43.5
115*90*22.4 MD-L115.090.022.46.4108.1113.00.86.5
120*95*22.4 MD-L120.095.022.46.4113.1118.00.86.5
125*100*25.4 MD-L125.0100.025.46.4118.1123.00.86.5
125*100*32 MD-L125.0100.032.010.0119.0123.00.86.5
125*103*26.5 MD-L125.0103.026.55.1121.0124.00.85.0
125*105*25 MD-L125.0105.025.06.3120.0123.00.85.0
125*105*25.4 MD-L125.0105.025.46.4119.1123.30.85.0
125*108*26.5 MD-L125.0108.026.57.2121.0124.40.44.5
130*105*25.4 MD-L130.0105.025.46.4123.1128.00.86.5
140*115*25.4 MD-L140.0115.025.46.4133.0138.00.86.5
140*120*25 MD-L140.0120.025.06.3135.0138.00.85.0
145*120*25.4 MD-L145.0120.025.46.4138.3143.00.86.5
150*125*25.4 MD-L150.0125.025.46.4143.0148.00.86.5
160*130*25.4 MD-L160.0130.025.46.4153.0157.90.87.5
160*135*25.4*9.5 MD-L160.0135.025.49.5152.6157.50.86.5
160*138*26.5 MD-L160.0138.026.55.1156.0159.00.85.0
160*140*25 MD-L160.0140.025.06.3155.0158.00.85.0
160*143*26.5 MD-L160.0143.026.57.2156.0159.40.85.0
170*145*25.4*12.7 MD-L170.0145.025.412.7161.7167.10.86.5
180*150*35.4 MD-L180.0150.035.46.4173.0178.00.87.5
180*155*25.4*12.7 MD-L180.0155.025.412.7171.7177.70.86.5
190*165*25.4 MD-L190.0165.025.412.7181.7188.00.86.5
200*170*35.4 MD-L200.0170.035.46.4193.0198.00.87.5
200*170*36 MD-L200.0170.036.012.5192.0197.00.87.5
200*175*25.4-12.7 MD-L200.0175.025.412.7191.6197.00.86.5
200*180*31.5 MD-L200.0180.031.59.2196.0199.40.85.0
220*190*35.4 MD-L220.0190.035.46.4213.0218.00.87.5
220*195-25.4-12.7 MD-L220.0195.025.412.7211.6217.00.86.5
250*220*35.4 MD-L250.0220.035.46.4243.0248.00.87.5
250*225*25.4 MD-L250.0225.025.412.7241.6247.00.86.5

MD-L Imperial

Part No(D) ±H9(d) ±h9(L₁) +.007(L₂) +.003(D₁) ±h9(D₂) ±h11(R) max(C) min
1.500*1.000*0.625*0.250 MD-L1.5001.0000.6250.2501.3601.4580.0080.125
1.750*1.125*0.750*0.250 MD-L1.7501.1250.7500.2501.5701.6980.0080.156
2.000*1.375*0.750*0.250 MD-L2.0001.3750.7500.2501.8201.9480.0080.156
2.250*1.625*0.750*0.250 MD-L2.2501.6250.7500.2502.0692.1970.0080.156
2.375*1.750*0.750*0.250 MD-L2.3751.7500.7500.2502.1942.3220.0080.156
2.500*1.875*0.750*0.250 MD-L2.5001.8750.7500.2502.3192.4460.0080.156
2.750*2.000*0.937*0.250 MD-L2.7502.0000.9370.2502.5222.6850.0080.187
3.000*2.250*0.937*0.250 MD-L3.0002.2500.9370.2502.7722.9350.0080.187
3.250*2.500*0.937*0.250 MD-L3.2502.5000.9370.2503.0213.1840.0080.187
3.500*2.750*0.937*0.250 MD-L3.5002.7500.9370.2503.2713.4340.0080.187
4.000*3.250*0.937*0.250 MD-L4.0003.2500.9370.2503.7703.9330.0080.187
5.000*4.000*1.250*0.250 MD-L5.0004.0001.2500.2504.7284.9210.0150.218
5.500*4.500*1.250*0.375 MD-L5.5004.5001.2500.3755.2135.4100.0150.218
6.000*5.000*0.250*0.375 MD-L6.0005.0001.2500.3755.7095.9020.0150.218

Piston T-Seals

Designed to fit imperial o’ring housings in accordance to ISO3601 (BS1806/AS568A o’ring sizing), T-seals are an ideal replacement for o’rings. The T-shaped sealing element serves as a slide ring that’s highly resistant twisting and spiral failure. Piston T-seals seal statically against the groove ID and are suitable for pressures up to 345 bar (5,000 psi).

MPT: Piston T-Seal

MPT profiles have a nitrile (NBR) rubber sealing element and hard polyamide, non-locking anti-extrusion rings.

  • Material: NBR/PA
  • Pressure: 345 bar (5,000psi)
  • Speed ≤250 bar: ≤1 m/s (3.2 ft/s)
  • Speed ≤350 bar: ≤0.5 m/s (1.6ft/s)
  • Classification: Light to heavy duty
  • Sizing: Imperial

MPT-Piston-T-Seal

MPT Piston T-Seal

Part NoNom(d)(D)(L)O’ring Ref
MPT-0013/8*3/16*3/320.1980.3740.140BS106
MPT-0027/16*1/4*3/320.2610.4370.140BS108
MPT-0031/2*5/16*3/320.3230.4990.140BS109
MPT-0049/16*5/16*1/80.3200.5620.187BS203
MPT-0055/8*3/8*1/80.3830.6250.187BS204
MPT-00611/16*7/16*1/80.4450.6870.187BS205
MPT-0073/4*1/2*1/80.5050.7500.187BS206
MPT-00813/16*9/16*1/80.5700.8120.187BS207
MPT-0097/8*5/8*1/80.6300.8750.187BS208
MPT-01015/16*11/16*1/80.6950.9370.187BS209
MPT-0111*3/4*1/80.7561.0010.187BS210
MPT-0121-1/16*13/16*1/80.8181.0630.187BS211
MPT-0131-1/8*7/8*1/80.8811.1260.187BS212
MPT-0141-3/16*15/16*1/80.9431.1880.187BS213
MPT-0151-1/4*1*1/81.0061.2510.187BS214
MPT-0161-5/16*1-1/16*1/81.0681.3130.187BS215
MPT-0171-3/8*1-1/8*1/81.1311.3760.187BS216
MPT-0181-7/16*1-3/16*1/81.1931.4380.187BS217
MPT-0191-1/2*1-1/4*1/81.2561.5010.187BS218
MPT-0201-9/16*1-5/16*1/81.3201.5620.187BS219
MPT-0211-5/8*1-3/8 *1/81.3811.6260.187BS220
MPT-0221-3/4*1-1/2*1/81.5061.7510.187BS222
MPT-0231-7/8*1-1/2*3/161.5021.8760.281BS325
MPT-0242*1-5/8*3/161.6272.0010.281BS326
MPT-0252-1/8*1-3/4*3/161.7522.1260.281BS327
MPT-0262-1/4*1-7/8*3/161.8772.2510.281BS328
MPT-0272-3/8*2*3/162.0022.3760.281BS329
MPT-0282-1/2*2-1/8*3/162.1272.5010.281BS330
MPT-0292-5/8*2-1/4*3/162.2522.6260.281BS331
MPT-0302-3/4*2-3/8*3/162.3772.7510.281BS332
MPT-0312-7/8*2-1/2*3/162.5022.8760.281BS333
MPT-0323*2-5/8*3/162.6273.0010.281BS334
MPT-0333-1/8*2-3/4*3/162.7523.1260.281BS335
MPT-0343-1/4*2-7/8*3/162.8773.2510.281BS336
MPT-0353-1/2*3-1/8*3/163.1283.5020.281BS338
MPT-0363-5/8*3-1/4*3/163.2533.6270.281BS339
MPT-0373-3/4*3*3/8*3/163.3783.7520.281BS340
MPT-0383-7/8*3-1/2*3/163.5033.8770.281BS341
MPT-0394*3-5/8*3/163.6284.0020.281BS342
MPT-0404-1/8*3-3/4*3/163.7534.1270.281BS343
MPT-0414-1/4*3-7/8*3/163.8784.2520.281BS344
MPT-0424-3/8*4*3/164.0034.3770.281BS345
MPT-0434-1/2*4-1/8*3/164.1284.5020.281BS346
MPT-0444-5/8*4-1/4*3/164.2534.6270.281BS347
MPT-0454-3/4*4-3/8*3/164.3784.7520.281BS348
MPT-0464-7/8*4-1/2*3/164.5034.8770.281BS349
MPT-0475*4-5/8*3/164.6295.0030.281BS350
MPT-0485-1/8*4-5/8*1/44.6495.1280.375BS426
MPT-0495-1/4*4-3/4*1/44.7745.2530.375BS427
MPT-0505-3/8*4-7/8*1/44.9035.3770.375BS428
MPT-0515-1/2*5*1/45.0245.5030.375BS429
MPT-0525-5/8*5*1/8*1/45.1535.6270.375BS430
MPT-0535-3/4*5-1/4*1/45.2745.7530.375BS431
MPT-0545-7/8*5-3/8*1/45.3995.8780.375BS432
MPT-0556*5-1/2*1/45.5246.0030.375BS433
MPT-0566-1/8*5-5/8*1/45.6296.1280.375BS434
MPT-0576-1/4*5-3/4*1/45.7746.2530.375BS435
MPT-0586-1/2*6*1/46.0246.5030.375BS437
MPT-0596-3/4*6-1/4*1/46.2786.7520.375BS438
MPT-0607*6-1/2*1/46.5247.0030.375BS439
MPT-0617-1/4*6-3/4*1/46.7747.2530.375BS440
MPT-0627-1/2*7*1/47.0247.5030.375BS441
MPT-0637-3/4*7-1/4*1/47.2787.7520.375BS442
MPT-0648*7-1/2*1/47.5248.0030.375BS443
MPT-0658-1/4*7-3/4*1/47.7748.2530.375BS444
MPT-0668-1/2*8*1/48.0248.5030.375BS445
MPT-0679*8-1/2*1/48.5249.0030.375BS446
MPT-0689-1/2*9*1/49.0249.5030.375BS447
MPT-06910*9-1/2*1/49.52410.0030.375BS448
MPT-07010-1/2*10*1/410.02410.5030.375BS449
MPT-07111*10-1/2*1/410.52411.0030.375BS450
MPT-07211-1/2*11*1/411.02411.5030.375BS451
MPT-07312*11-1/2*1/411.52412.0030.375BS452

LTP: Locking Piston T-Seal

MPT profiles have a nitrile (NBR) rubber sealing element and hard polyamide anti-extrusion rings that lock into the rubber sealing element.

  • Material: NBR/PA
  • Pressure: 345 bar (5,000psi)
  • Speed ≤250 bar: ≤1 m/s (3.2 ft/s)
  • Speed ≤350 bar: ≤0.5 m/s (1.6ft/s)
  • Classification: Light to heavy duty
  • Sizing: Imperial

MPT-Piston-T-Seal

LTP Piston T Seal

Part NoNom(d)(D)(L)
O’ring Ref
LTP-2045/8*3/8*1/80.3830.6250.187BS204
LTP-20611/16*7/16*1/80.5080.7500.187BS206
LTP-2087/8*5/8*1/80.6330.8750.187BS208
LTP-20915/16*11/16*1/80.6950.9370.187BS209
LTP-2101*3/4*1/80.7581.0000.187BS210
LTP-2111-1/16*13/16*1/80.8201.0620.187BS211
LTP-2121-1/8*7/8*1/80.8831.1250.187BS212
LTP-2141-1/4*1*1/81.0081.2500.187BS214
LTP-2161-3/8*1-1/8*1/81.1331.3750.187BS216
LTP-2181-1/2*1-1/4*1/81.2581.5000.187BS218
LTP-2201-5/8*1-3/8 *1/81.3831.6250.187BS220
LTP-2221-3/4*1-1/2*1/81.5081.7500.187BS222
LTP-3251-7/8*1-1/2*3/161.5051.8750.281BS325
LTP-3262*1-5/8*3/161.6302.0000.281BS326
LTP-3272-1/8*1-3/4*3/161.7552.1250.281BS327
LTP-3282-1/4*1-7/8*3/161.8802.2500.281BS328
LTP-3292-3/8*2*3/162.0052.3750.281BS329
LTP-3302-1/2*2-1/8*3/162.1302.5000.281BS330
LTP-3312-5/8*2-1/4*3/162.2552.6250.281BS331
LTP-3322-3/4*2-3/8*3/162.3802.7500.281BS332
LTP-3332-7/8*2-1/2*3/162.5052.8750.281BS333
LTP-3343*2-5/8*3/162.6303.0000.281BS334
LTP-3353-1/8*2-3/4*3/162.7553.1250.281BS335
LTP-3363-1/4*2-7/8*3/162.8803.2500.281BS336
LTP-3383-1/2*3-1/8*3/163.1303.5000.281BS338
LTP-3403-3/4*3*3/8*3/163.3803.7500.281BS340
LTP-3413-7/8*3-1/2*3/163.5053.8750.281BS341
LTP-3424*3-5/8*3/163.6304.0000.281BS342
LTP-3434-1/8*3-3/4*3/163.7554.1250.281BS343
LTP-3444-1/4*3-7/8*3/163.8804.2500.281BS344
LTP-3464-1/2*4-1/8*3/164.1304.5000.281BS346
LTP-3484-3/4*4-3/8*3/164.3804.7500.281BS348
LTP-3494-7/8*4-1/2*3/164.5054.8750.281BS349
LTP-3505*4-5/8*3/164.6305.0000.281BS350
LTP-4265-1/8*4-5/8*1/44.6535.1280.375BS426
LTP-4275-1/4*4-3/4*1/44.7785.2520.375BS427
LTP-4285-3/8*4-7/8*1/44.9035.3750.375BS428
LTP-4295-1/2*5*1/45.0285.5020.375BS429
LTP-4305-5/8*5*1/8*1/45.1535.6270.375BS430
LTP-4315-3/4*5-1/4*1/45.2785.7520.375BS431
LTP-4336*5-1/2*1/45.5286.0020.375BS433
LTP-4376-1/2*6*1/46.0286.5020.375BS437
LTP-4397*6-1/2*1/46.5287.0020.375BS439
LTP-4479-1/2*9*1/49.0289.5020.375BS447
LTP-44810*9-1/2*1/49.52810.0020.375BS448
LTP-45212*11-1/2*1/411.52812.0020.375BS452
LTP1-3343*2-5/8*0.3342.6303.0000.311BS334
LTP1-3383-1/2*3-1/8*0.3343.1303.5000.311BS338
LTP1-4397*6-1/2*0.4756.5287.0020.408BS439
LTP1-4417-1/2*7*0.4757.5287.0020.408BS441
LTP1-45212*11-1/2*0.47511.52811.5020.408BS452
LTP2-2141-1/4*1*0.3041.0081.0000.304BS214
LTP2-2181-1/2*1-1/4*0.3041.2581.5000.304BS218
LTP2-3282-1/4*1-7/8*0.3341.8802.2500.410BS328
LTP2-3302-1/2*2-1/8*0.3342.1302.5000.410BS330
LTP2-3343*2-5/8*0.3342.6303.0000.410BS334
LTP2-3383-1/2*3-1/8*0.3343.1303.5000.410BS338
LTP2-3424*3-5/8*0.3343.6304.0000.410BS342
LTP2-3505*4-5/8*0.3344.6305.0000.410BS350
LTP2-4254-1/2*5*0.4244.5285.0000.538BS425
LTP2-4336*5-1/2*0.4245.5286.0020.538BS433
LTP2-4356-1/4*5-3/4*0.4245.7786.2520.538BS435
LTP2-4448-1/4*7-3/4*0.4247.7788.2520.538BS444
LTP2-45212*11-1/2*0.42411.52812.0020.538BS452
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