--- product_id: 18711945 title: "109 Silicone O-Ring, 70A Durometer, Red, 5/16\" ID, 1/2\" OD, 3/32\" Width (Pack of 100)" brand: "mr o-ring" price: "€ 19.36" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.gr/products/18711945-109-silicone-o-ring-70a-durometer-red-5-16-id store_origin: GR region: Greece --- # Aerospace Standard AS568A 70A Durometer -65°F to 450°F 109 Silicone O-Ring, 70A Durometer, Red, 5/16" ID, 1/2" OD, 3/32" Width (Pack of 100) **Brand:** mr o-ring **Price:** € 19.36 **Availability:** ✅ In Stock ## Summary > 🔒 Seal the Deal with Confidence! ## Quick Answers - **What is this?** 109 Silicone O-Ring, 70A Durometer, Red, 5/16" ID, 1/2" OD, 3/32" Width (Pack of 100) by mr o-ring - **How much does it cost?** € 19.36 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/18711945-109-silicone-o-ring-70a-durometer-red-5-16-id) ## Best For - mr o-ring enthusiasts ## Why This Product - Trusted mr o-ring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Value Pack:** 100 pieces to keep your projects running smoothly without interruption. - • **Durable Hardness:** 70A durometer rating provides exceptional resistance to penetration. - • **Precision Sealing:** Round cross-section ensures a perfect seal between cylindrical surfaces. - • **Extreme Temperature Resilience:** Withstands temperatures from -65°F to 450°F, perfect for any environment. - • **Versatile Chemical Compatibility:** Engineered for a wide range of chemicals and fluids. ## Overview The 109 Silicone O-Ring is a high-performance sealing solution designed for professionals, featuring a 70A durometer for durability, a wide temperature range, and compliance with Aerospace Standard AS568A. Perfect for various applications, this pack of 100 ensures you’re always prepared for any sealing challenge. ## Description 109 Silicone O-Ring, 70A Durometer, Red, 5/16" ID, 1/2" OD, 3/32" Width (Pack of 100) ## Features - Made of silicone for use with a variety of chemicals and fluids - Can be used across a wide temperature range from -65 degrees F (-54 degrees C) to 450 degrees F (232 degrees C) - Round in cross-section to provide a seal between cylindrical overlapping surfaces - Durometer (hardness) of 70A for resistance to penetration - Meets standards defined by Aerospace Standard AS568A ## Images ![109 Silicone O-Ring, 70A Durometer, Red, 5/16" ID, 1/2" OD, 3/32" Width (Pack of 100) - Image 1](https://m.media-amazon.com/images/I/71Fbh-mFhNL.jpg) ![109 Silicone O-Ring, 70A Durometer, Red, 5/16" ID, 1/2" OD, 3/32" Width (Pack of 100) - Image 2](https://m.media-amazon.com/images/I/51bid7qjm5L.jpg) ## Customer Reviews ### ⭐⭐ Labeled -109, but measures like a -110, make sure to check with a calipers *by C***S on Reviewed in the United States on February 6, 2022* These appear to be high quality silicone orings, but I was shipped the incorrect size of orings. While the bag label indicated 109, they measured as 110. I ordered a second bag of 109 o-rings from this supplier and they are the correct size. I am not sure how they got packaged incorrectly. I'd recommend checking the size with a calipers before you attempt to use them in case the same thing happens to you.A -109 o-ring is the size o-ring to use on keg dip tubes. I was recommended to purchase these and was excited to refresh all of my kegs. The factory o-rings are square -109 sized (5/16" ID, 1/2" OD, 3/16" Thickness).The package I have is labeled "109-S770-100" I'd guess for -109, durometer 70, 100 count, but these aren't 109. After spending far too long trying to make sure I didn't select the wrong size, I grabbed my calipers. The measurements of the o-rings match a -110 size, not a -109.A bit disappointed. I ordered 3 different types of o-rings made by sterling seal & supply. The others seem to be to specification. Maybe this one bag was labeled incorrectly? ### ⭐⭐⭐⭐⭐ Storz & Bickel Volcano Hybrid Gaskets *by A***W on Reviewed in the United States on August 2, 2021* I bought these as a bulk alternative to buying straight from S&B. These are a match for the bowl piece, where the bag or hose connects.The gasket fits tighter, the bag and hose fit looser. With the S&B gaskets, it was the other way around for me. This is preferred. ### ⭐⭐⭐⭐⭐ Works for volcano hybrid *by A***. on Reviewed in the United States on May 15, 2021* I purchased these to replace the o ring in my volcano hybrid vaporizer. It looked like they would be to small at first but they do fit with a little effort, and they hold the metal bit in place since the little tabs broke off. Quality o rings. --- ## 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.gr/products/18711945-109-silicone-o-ring-70a-durometer-red-5-16-id](https://www.desertcart.gr/products/18711945-109-silicone-o-ring-70a-durometer-red-5-16-id) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-22*