In This Section:
Oil Seals Seal Types Cross Reference Chart Shaft and Bore Configurations

Oil Seal Types and Designs

   
C
B
A
   
Rubber cover O.D. for improved O.D. sealing ability.
Metal O.D. with ground surface and front chamfer.
Metal O.D. with an inner case.
S Single lip with a garter spring.
oil seal type SC
SC
oil seal type SB
SB
oil seal type SA
SA
T Dual lip with a garter spring.
oil seal type TC
TC
oil seal type TB
TB
oil seal type TA
TA
V Single lip without a garter spring.
oil seal type VC
VC
oil seal type VB
VB
oil seal type VA
VA
K Dual lip without a garter spring.
oil seal type KC
KC
oil seal type KB
KB
oil seal type KA
KA

Lip Material

It is very important to take into account the environment in which the seal will operate when you are selecting the sealing element material. The most important factors are temperature, medium being sealed, pressure, and shaft speed.

The table and figures below provide general information to help select the compound according to physical property.

Compound
Nitriles
(Code N)
Poly Acrylates
(Code P)
Silicone
(Code S)
Fluoro Rubber
Viton
(Code V)
Temperature Range
-40° to 248°F
-22° to 302°F
-58° to 356°F
-22° to 392°F
Abrasion Resistance
2
3
4
2
Compression Set
2
3
2
2
Cracking Resistance
3
3
1
2
Cut Growth Resistance
2
2
4
4
Flex Cracking Resistance
3
3
2
2
Impact Strength
2
4
3
3
Low Temperature Resistance
2
4
1
2
Oxidation Resistance
2
1
1
1
Sun Light Resistance
3
1
1
1
Tear Resistance
2
4
4
3
Weathering resistance
2
1
1
1

Note: 1 = Excellent 2 = Good 3 = Fair 4 = Poor

Oil Seal Types PDF (196 KB)