OS-B12 15 X 21 X 4 FKM
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S 15 X 21 X 4 WBO VIT

OS-B12 15 X 21 X 4 FKM

UPC: 57749126

Picture is stock photo, not actual part. Picture to show style of seal.  
You will get correct size when you order.

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Metal Exposed Spring Less Viton® Oil Seal

B1OF, VB, WBO Viton®


Specs:

 Radial shaft seal with outer metal case and sealing lip without spring.


Material:

FKM (Fluorocarbon), Plain Steel case.

Max Temperature: -20°F - 400°F

Max Surface Speed: 6 m/s

Max Pressure:


Application:

Grease

Simple sealing element for ancillary use; to seal against grease; as an additional seal against light to medium dust and dirt.