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Oil Seals For Mechanical Seal, Rubber Seal, Shaft Seals & Hydraulic Seals

Selecting the Right Oil Seal
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Why AFM?
There are a number of influencing factors including temperature, pressure, motion and speed that affect the sealing behavior and life of the radial shaft oil seal, and these factors must be taken into account when selecting the optimal seal design and materials. At AFM, we will utilize our wealth of engineering knowledge and experience to help you find the right solution for your application.

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Oil Seal Engineering Guide & Catalog (PDF, 45MB)

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Oil Seals Selection Chart

Style

Material/Temperature

Operating Parameters

Maximum Continous Pressure

Shaft Diameter (inches)

Max. Shaft Speed (RPM)

Max. Total Eccentricity (inches)

SA2

SB2

SB

SBR

SC

"S" Style

•	General non-pressure fluid sealing applications and severe grease sealing conditions.
•	Metal O.D. with inner case is for greater structural rigidity.
•	Rubber O.D. design for excellent O.D. sealing ability.

	Nitrile		-65° 275°F
	Polyacrylate		-20° 300°F
	Silicone		-80° 400°F
	Viton®		-15° 400°F

5 psi or less

0.500
1.500
2.500
3.500
4.500

7,000
6,000
4,000
3,500
2,600

.004
.006
.010
.013
.017

TA2

TB2

TB

TBR

TC

"T" Style

•	General non-pressure fluid sealing applications and severe grease sealing conditions with light duty exclusion of foreign materials.
•	Metal O.D. with inner case is for greater structural rigidity.
•	Rubber O.D. design for excellent O.D. sealing ability.

	Nitrile		-65° 275°F
	Polyacrylate		-20° 300°F
	Silicone		-80° 400°F
	Viton®		-15° 400°F

5 psi or less

0.500
1.500
2.500
3.500
4.500

7,000
6,000
4,000
3,500
2,600

.004
.006
.010
.013
.017

VA2

VB2

VB

VBR

VC

"V" Style

•	Economical design for grease retention or sealing viscous fluid.
•	Metal O.D. with inner case is for greater structural rigidity.
•	Rubber O.D. design for excellent O.D. sealing ability.

	Nitrile		-65° 275°F
	Polyacrylate		-20° 300°F
	Silicone		-80° 400°F
	Viton®		-15° 400°F

4 psi or less

0.500
1.500
2.500
3.500
4.500

3,500
2,500
2,100
1,500
1,200

.003
.005
.006
.008
.010

KA2

KB2

KB

KBR

KC

"K" Style

•	Economical design for grease retention or sealing viscous fluid with light duty exclusion of foreign materials.
•	Metal O.D. with inner case is for greater structural rigidity.
•	Rubber O.D. design for excellent O.D. sealing ability.

	Nitrile		-65° 275°F
	Polyacrylate		-20° 300°F
	Silicone		-80° 400°F
	Viton®		-15° 400°F

4 psi or less

0.500
1.500
2.500
3.500
4.500

3,500
2,500
2,100
1,500
1,200

.003
.005
.006
.008
.010

WPB

WPC

"W" Style

•	Dust wiper or scraper for reciprocating applications.
•	Rubber O.D. design for excellent O.D. sealing ability.

	Nitrile		-65° 275°F
	Polyacrylate		-20° 300°F
	Silicone		-80° 400°F
	Viton®		-15° 400°F

4 psi or less

0.500
1.500
2.500
3.500
4.500

3,500
2,500
2,100
1,500
1,200

.003
.005
.006
.008
.010

NOTES:

•	WPB & WPC Styles: Reciprocating Motion: Misalignment shaft to bore ±0.004 max.
•	Higher shaft speeds are possible using higher temperature materials such as Viton® or Silicone.
•	Higher eccentricity is allowable if shaft speed is reduced.
•	Consult AFM for design specifications when using an oil seal in a reciprocating application.

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