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Description
COMP Cams Valve Stem Seals Viton .500 in. Guide, 0.310 in. Valve Stem # CC519-16COMP Cams Valve Stem Seals Viton . 500 in. Guide, 0. 310 in. Valve Stem # CC519 16 Valve Stem Seals, Viton, Positive Stop, . 500 in. Guide, 0. 310 in. Valve Stem, Set of 16 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. 500 in. Valve Stem Seal Outside Diameter (in): 0. 500 in. Quantity: Sold as a set of
COMP Cams Valve Stem Seals Viton .500 in. Guide, 0.310 in. Valve Stem # CC519-16Valve Stem Seals, Viton, Positive Stop, .500 in. Guide, 0.310 in. Valve Stem, Set of 16
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):0.500 in.
Valve Stem Seal Outside Diameter (in):0.500 in.
Quantity:Sold as a set of 16.
Notes:Designed for triple spring. Requires machining the top of the valve guide with a special .500 in. diameter cutter.
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
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Product Reviews
★★★★★ 5
Warm
Color: Dark Grey, Size: 34W x 30L
Don’t hold a crease very well but fit nicely and expandable waist is nice and warm
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Reviewed in the United States on January 25, 2026
★★★★★ 5
Toasty and comfortable
Color: Dark Grey, Size: 36W x 32L
These pants keep the wind out so that are perfect for the cold windy days on the course
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Quality product
Quality product that priced well below the big name brand retailers. Ideal for cold damp days on the golf course
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Reviewed in the United States on February 22, 2026
★★★★★ 5
Perfect polo shirt
I love these shirts for the way they feel on my sensitive skin. The color adds a bit of interest which has been commented
I like these shirts very much and have bought one of almost every color, mostly short sleeved, but some long. They suit my sensitive skin which I've acquired in old age. Probably the only thing I wear which has ever been commented on.
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Reviewed in the United States on December 28, 2025
★★★★★ 5
Excellent
Excellent Polo Shirt
In the past weeks I bought one for my dad and my mom was in love with the fabric, soft and easy to wash. After that we got almost all the colors that they have.
I highly recommended it.
Thanks
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Reviewed in the United States on November 2, 2025