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3/8" Umbrella Seals Black Nylon, SBC w/ 3/8" Stem Exhaust Valves, Small OD Universal

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Calculated at checkout

Product Description

Small OD 3/8" Umbrella Seals, all Black NYLON


SB Chevy Truck Engines w/ 3/8" Stem exhaust valves

Package of 8 seals.


These seals are manufactured from all Black Nylon.

This type of seal was used by GM on their heavy duty SBC truck engines running 3/8" stem exhaust valves.

Can also be used as an universal 3/8" umbrella seal providing adequate clearances exist.


     Specification Data:

  • Fits: 3/8" Valve Stems.
  • Inside Diameter, smallest point: .605”
  • Inside Diameter, widest point: .635"
  • Outside Diameter: .715"
  • Height: .450” Tall
  • Seal Material: Poly Acrylic
  • Material Temp Rating: 375F
  • Seal Type: Umbrella
  • Number of seals included in purchase: Eight
  • Valve seal protector sleeve included? No- can not use w/ this type of seal.


Also available in a viton grommet version. Check our other 3/8" umbrella seal listings or write.