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11/32" X .500"-.545", Viton Valve Seals, Flex Body Type, VSS-402, Set of 16

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Calculated at checkout

Product Description

Positive Valve Seals, Blue Viton

Valve Seals, Flex Body, Universal Fit

Size- 11/32"

Guide Diameter Range- .500"-.545"

Sixteen seals

If you’re looking for quality valve seals, you’ve come to the right place!

We continue to build our valve seal line and now have one of the largest selections of valve seals available online.

These are from our FLEX BODY SEAL family


     Specification Data:

  • Size: 11/32” X .500"-.545"
  • Fits: 11/32" Valve Stems.
  • Fits: .500"-.545” Guide Boss Diameter.
  • Wall Thickness per side: .094" 
  • Total Wall Thickness: .188" (.094" Per Side)
  • O.D. See Note below*
  • Seal Material: Viton
  • Material Temp Rating: 450F
  • Seal Type: Flex Body
  • Number of seals included in purchase: Sixteen
  • Valve seal protector sleeve included? YES- One 11/32" sleeve is now included.


* Based on the fact that flex seals fit a range of different guide diameters, the actual seal O.D. cannot be predetermined without knowing the existing guide diameter but once known, it can be determined using simple math.

To figure the seals outside diameter after installation, use the total wall thickness specification from the chart above and add it to your applications guide diameter.

Let’s say your applications guide diameter is .502” and the total wall thickness is .188” (both sides added together)

Guide diameter + total wall thickness = estimated seal outside diameter.

Example- .502” + .188” = .690” estimated outside diameter.

The formula won't be 100% accurate but will be close enough to make an educated selection.


Common Applications for this seal size:

  • SBC, SBF, Pontiac, Olds, Ford, Buick, Cadillac w/ guide boss sized between: .500"-.545" (Will not work on tapered valve guides like stock 351C heads.)
  • Universal fit, flexes over a range of size.
  • Any 11/32" valve application w/ a guide diameter between- .500"-.545"


Need a different seal? Check our other categories and if you can’t find what you’re looking for, send us a message.

All our seals are available in bulk packs of 200 or more. Write for details.



Alex’s Parts, the smart choice in valve train products~