Rotary Shaft Seals/ Oil Seals

Rotary shaft seals (aka oil seals) are commonly low pressure seals designed to seal between a rotating shaft and body to prevent the loss of lubricating fluids and prevent the ingress of dirt and other contaminates.

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Imperial Contoured Back-up Sizes

Besides o’rings, rotary shaft seals are some of the most common type of seals to be found on machinery. Often used as bearing seals, they can also be found in applications such as crank shaft seal on engines, output shaft seal on gearboxes and propeller shaft seal on boats. Some are designed to seal on the OD for applications with a rotating housing. And some designs can accommodate high pressures; up to 9.8bar (142psi) depending on seal type.

Sealing Australia stocks a wide range of rotary shaft seals and V-rings in various styles and compounds.

Rotary Profiles

Rotary shaft seals are available in many variations of profile (styles), the most common being the TC style. Most profiles feature a sealing lip pre-energised by a helical garter spring and all are available with or without a secondary non-spring loaded dust lip. Others have two spring loaded lips to seal between two mediums and some have no spring at all. There are profiles for automotive applications such as the bearing seals for trailers featuring Ford or Holden hubs. There’s profiles for high temperature and high pressure applications. Types for directional, bi-directional and non-directional rotation. There’s reinforced and non-reinforced structures. There are profiles that are completely enclosed with rubber and others with exposed metal on the periphery. There are so many different styles of rotary shaft seals out there, we cannot list them all. So if you cannot find the profile you’re after in the table below, give us a call as we can still give assistance.

See table below for various styles of rotary shaft seals.

Rotary shaft seal profiles

TypeProfileProfileProfileProfileProfile
Type C
SC
TC
VC
KC
DC
Type B
SB
TB
VB
KB
DB
Type B
SB2
TB2
VB2
KB2
DB2
Type B
SBR
TBR
VBR
KBR
DBR
Type A
SA2
TA2
VA2
KA2
DA2
Type 3
TC3
TB3
TA3
KC3
KB3
Type 4
TC4
TB4
TCL
TC4L
TC4P
Type 4
DC4
DC4Y
DC4P
TC42-Rotary
TC40-Rotary
Type 5
SC5
TC5
VC5
KC5
DC5
Type 5
SB5
TB5
VB5
KB5
DB5
Type 6
SB6
TB6
VB6
KB6
Type 6
SA6
TA6
VA6
KA6
Type 7
TB7
TB7R
TC7
TC9
End Cover
EC
ECW
VK
VKW
Pressure Design
TCV
TCP
TCHP
TCN
Type W
SCW
TCW
VCW
KCW
Part Metal / Rubber
SBC
TBC
VBC
KBC
Part Metal / Rubber
SBCW
TBCW
VBCW
KBCW
Axile Seal
UA
UA+
UAO
UAO+
Agriculture Seal
QA
QLF
TCFY
TCFA
Type O External Sealing
OSC
OTC
OVC
OKC
Type O External Sealing
OSB
OTB
OVB
OKB
Type O External Sealing
OSA
OTA
OVA
OKA
V Rings
VA
VL
VS

Directional Helix Designs

Directional rotary shaft seals are seals designed to operate either single direction or bi-directional operation. The seals have a series of helical raised ridges on the sealing lip that when rotating, create a pumping action that reverses oil flow away from the sealing lip. As an added advantage the helix lips have less surface contact with the shaft, therefore have less friction and less wear giving longer lasting and more energy efficient seal.

See table below for helix lip designs.

Helix Designs

   Helix Design  
Bi-Directional
H0
H1
H2
H3
H4
Bi-Directional
H5
H6
H7
H8
H9
Bi-Directional
H10
H11
H12
H13
H14
Bi-Directional
H15
H16
Left Hand Rotation
L
L1
L2
L3
L4
Right Hand Rotation
R
R1
R2
R3
R4

For more information, quotation or assistance with rotary shaft seals, please contact us.

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