--- product_id: 13649300 title: "Viton Metal Valve Seals 11/32 by COMP Cams" brand: "comp cams" price: "$55.13" currency: USD in_stock: true url: https://www.desertcart.us/products/13649300-viton-metal-valve-seals-11-32-by-comp-cams store_origin: US region: United States of America --- # High-temp Viton material Optimized clearance design Precision-machined fit Viton Metal Valve Seals 11/32 by COMP Cams **Brand:** comp cams **Price:** $55.13 **Availability:** ✅ In Stock ## Summary > ⚡ Unlock your engine’s true potential with precision Viton valve seals! ## Quick Answers - **What is this?** Viton Metal Valve Seals 11/32 by COMP Cams by comp cams - **How much does it cost?** $55.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/13649300-viton-metal-valve-seals-11-32-by-comp-cams) ## Best For - comp cams enthusiasts ## Why This Product - Trusted comp cams brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Proudly Made in the USA:** Trust in American manufacturing quality and reliability for your high-performance engine needs. - • **Precision Guide Attachment:** Designed to mount on valve guides, ensuring a secure fit and requiring professional machining for optimal results. - • **Engineered for Peak Performance:** Upgrade from factory O-ring seals with durable Viton construction for superior heat and wear resistance. - • **Maximized Valve Spring Clearance:** Smaller outside diameter allows enhanced clearance for dual and beehive valve springs, boosting engine efficiency. - • **Perfect Fit for .530" Guides & 11/32" Stems:** Specifically tailored to fit engines with these exact dimensions, guaranteeing seamless compatibility. ## Overview The Comp Cams 518-16 set features 16 high-performance Viton valve seals engineered for .530" valve guides and 11/32" valve stems. These seals offer superior heat resistance and durability compared to factory O-ring styles, require machining for guide attachment, and provide enhanced clearance for advanced valve spring setups. Made in the USA, they deliver a precise fit and reliable upgrade for serious engine builders. ## Description Comp Cams 518-16 Set of 16 Metal Body Viton Valve Seals for .530"" Guide Size, 11/32"" Valve Stem" ## Features - Quality Material - Made from Viton, these seals are a great performance upgrade from factory O-ring style seals. - Machine Work Required - Unlike factory style O-Ring seals that ride on the valve, these seals attach to the guide. Machining of the guide is typically required. - Better Clearance - Smaller outside diameter, these Viton seals offer more clearance for performance dual and beehive valve springs. - Fits Engines w/ 0.530" OD Valve Guides and 11/32" Valve Stems - Made in USA - Fit type: Vehicle Specific ## Technical Specifications | Specification | Value | |---------------|-------| | Material | Viton | | Nominal Inside Diameter | 0.53 Inches | | Item Diameter | 0.53 Inches | | Brand | Comp Cams | | Color | Silver | | Nominal Outside Diameter | 0.53 Inches | | UPC | 036584142966 786434163893 | | Manufacturer | COMP Cams | | Unit Count | 1.0 Count | | Global Trade Identification Number | 00036584142966 | | Model | 518-16 | | Item Weight | 0.353 ounces | | Item model number | 518-16 | | Is Discontinued By Manufacturer | No | | Manufacturer Part Number | 518-16 | | OEM Part Number | N | ## Product Details - **Material:** Viton - **Nominal Inside Diameter:** 0.53 Inches - **Item Diameter:** 0.53 Inches - **Brand:** Comp Cams - **Color:** Silver ## Images ![Viton Metal Valve Seals 11/32 by COMP Cams - Image 1](https://m.media-amazon.com/images/I/51hDDs3-W4L.jpg) ## Questions & Answers **Q: What is the difference in these and the 529-16 they seem to fit the same guides but are twice the price** A: The 529-16 seal has a bigger body OD than the 518-16 seal. These are used for single and dual spring applications, the 518-16 seal is used for triple spring applications and has a smaller body (.575" OD). **Q: Do I need intake or exhaust seals or will this set work for both chevy 350** A: The 518-16 is designed for 11/32" valve stems and cylinder heads with a 0.530" outside diameter valve guide. If your SBC fits these specs, then you're good. Keep in mind that the outer diameter of this seal is 0.575", so make sure this clears the inside diameter of your valve springs. **Q: Will 518-16 valve seals fit ford 5.0 engine** A: After installing they Lasted for about a Month, replaced them with Felpro valve seals **Q: Will these fit work with factory valves in tbi heads or not?** A: You will need to machine the top of the cylinder head valve guide with a special .530 diameter cutter to fit these type seals over the valve guide boss. These are an upgrade over the stock o-ring type valve seals and are used in high performance applications and work very well when installed correctly, usually installed when your heads are being reworked or rebuilt you can request to have these very good quality type seals installed by your local engine machine shop. Designed for 11/32" diameter valve stems. Hope this helps! ## Frequently Bought Together - Comp Cams 518-16 Set of 16 Metal Body Viton Valve Seals for .530"" Guide Size, 11/32"" Valve Stem" - COMP Cams 4732 11/32 Arbor/Pilot for Spring Seat and Valve Guide Cutters - COMP Cams 4726 .530 Valve Guide Cutter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/13649300-viton-metal-valve-seals-11-32-by-comp-cams](https://www.desertcart.us/products/13649300-viton-metal-valve-seals-11-32-by-comp-cams) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-21*