PRODUCT DESCRIPTION
Fits: Small, Big Block
Valve Stem Seals, PTFE, Positive Stop, .530 in. Guide, 3/8 in. Valve Stem
Valve Stem Diameter:
0.375 in.
Valve Stem Seal Type:
Positive stop
Valve Stem Seal Material:
PTFE
Machine Work Required:
Yes
Valve Guide Diameter (in):
0.530 in.
Quantity:
Sold as a set of 16.
Notes:
Requires machining the top of the valve guide with a special .530 in. diameter cutter.
COMP Cams offers a complete line of valve seals, from the stock GM O-rings to the positive-stop PTFE seals. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The O-ring seals use the standard retainer and oil splash shield. The umbrella seals are normally used when a larger-than-stock diameter spring is used. In the case of a double spring, the positive stop PTFE seals are used. For triple-spring applications, use the smaller-diameter Viton® seals.
