COMP Cams Valve Seals 520-8

COMP Cams offers a complete line of valve seals, from the stock GM O-rings to the positive-stop PTFE seals. They 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.Brand: COMP Cams
Manufacturer's Part Number: 520-8
Part Type: Engine Valve Stem Oil Seals
Product Line: COMP Cams Valve Seals
HP Direct Part Number: CCA-520-8
UPC: 036584151746
Valve Stem Diameter (in.): 0.313 in.
Valve Stem Diameter (mm): 7.95mm
Valve Stem Seal Type: Positive stop
Valve Stem Seal Material: Viton ®
Machine Work Required: No
Valve Guide Diameter (in.): 0.530 in.
Valve Stem Seal Outside Diameter (in.): 0.530 in.
Quantity: Sold as a set of 8.
Notes: Designed for triple spring. Requires machining the top of the valve guide with a special .530 in. diameter cutter.