Free Shipping on Orders Over $95 - Order by 11pm EST for Same-Day Shipping!
Shop By Vehicle
Shop By
All Categories

Gift Certificates
My Account
E-Mail Signup
Catalog Request

COMP Cams 500-12

Positive Stop PTFE Seal Guide Size: .530"

COMP Cams 500-12

Part Number: 249-500-12

Positive Stop PTFE Seal
  • Guide Size: .530''
  • Valve Size: 5/16''
  • 12/pkg
  • $18.99

    from Manufacturer
    COMP Cams 500-12 Positive Stop PTFE Seal Guide Size: .530" $18.99

    COMP Cams 500-12 Details

    Positive Stop PTFE Seals

  • 1 Year Limited Warranty

  • Specifications:

    Diameter (in.)
    Machine Work Required
    Sold as a set of 12
    Valve Guide Diameter (in.)
    Valve Stem Diameter (in.)
    Valve Stem Seal Material
    Valve Stem Seal Type
    Positive stop
    Manufacturer's Part Number:

    Comp Cams offers a complete line of valve stem seals, from the stock GM O-ring to the positive stop PTFE seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. O-ring seals use the standard retainer and oil splash shield. Umbrella seals are normally used when a larger-than-stock diameter spring is used; in the case of a double spring, positive stop PTFE seals are used. There is also a smaller diameter Viton seal available for triple spring applications. O-rings and umbrella seals require no machining, but PTFE seals require the heads to be disassembled so the top guides can be machined with a special .530" diameter cutter. Whenever you're planning an overhaul or cam change, don't forget the valve seals!

  • Excellent Sealing Properties
  • O-Ring & Umbrella Seals Require No Machining

  • Items You Need