![Tubeless noob, went surprisingly well except this bulging o-ring. I think because the valve hole is off-centre. Both rims are the same (Fulcrum "Racing 500DB"). OK on first ride, held pressure overnight. Tubeless noob, went surprisingly well except this bulging o-ring. I think because the valve hole is off-centre. Both rims are the same (Fulcrum "Racing 500DB"). OK on first ride, held pressure overnight.](https://preview.redd.it/tubeless-noob-went-surprisingly-well-except-this-bulging-o-v0-7hzmly6co9qa1.jpg?width=640&crop=smart&auto=webp&s=e5f3635119490051cc1385751af4d39ffb503d56)
Tubeless noob, went surprisingly well except this bulging o-ring. I think because the valve hole is off-centre. Both rims are the same (Fulcrum "Racing 500DB"). OK on first ride, held pressure overnight.
![Amazon.com: i72 Tubeless Valve Stems 36mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors Amazon.com: i72 Tubeless Valve Stems 36mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors](https://m.media-amazon.com/images/I/41Ux39B8t2L._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFIVE%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA13%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: i72 Tubeless Valve Stems 36mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors
![Amazon.co.jp: Presta Valve Nut | Road Bike Presta Valve Nut | Easy to Install Bicycle Tire Accessories with Seal O-Ring Fits French and Tubeless Valves for All Types of Bikes Linjia : Amazon.co.jp: Presta Valve Nut | Road Bike Presta Valve Nut | Easy to Install Bicycle Tire Accessories with Seal O-Ring Fits French and Tubeless Valves for All Types of Bikes Linjia :](https://m.media-amazon.com/images/I/61-0zMXaHnL.jpg)
Amazon.co.jp: Presta Valve Nut | Road Bike Presta Valve Nut | Easy to Install Bicycle Tire Accessories with Seal O-Ring Fits French and Tubeless Valves for All Types of Bikes Linjia :
![Amazon.com : Aracey Tubeless Presta Valve Stems, 36mm Presta Valve Stems with Valve Core Remover Caps - Super Light Alloy - Pair -Multiple Color and Size Options(Black, 36MM) : Sports & Outdoors Amazon.com : Aracey Tubeless Presta Valve Stems, 36mm Presta Valve Stems with Valve Core Remover Caps - Super Light Alloy - Pair -Multiple Color and Size Options(Black, 36MM) : Sports & Outdoors](https://m.media-amazon.com/images/I/714o2Y3VegL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : Aracey Tubeless Presta Valve Stems, 36mm Presta Valve Stems with Valve Core Remover Caps - Super Light Alloy - Pair -Multiple Color and Size Options(Black, 36MM) : Sports & Outdoors
![How to get a tubeless valve o-ring to seal on an angled surface on a gravel bike wheel? : r/bikewrench How to get a tubeless valve o-ring to seal on an angled surface on a gravel bike wheel? : r/bikewrench](https://preview.redd.it/how-to-get-a-tubeless-valve-o-ring-to-seal-on-an-angled-v0-13epry9b2dlb1.jpg?auto=webp&s=28b0f643109eea38ce2e90d04d674af5e6039fa7)
How to get a tubeless valve o-ring to seal on an angled surface on a gravel bike wheel? : r/bikewrench
![Lost a Valve Stem for Your Tubeless Rims? Orange Seal Has You Covered - Singletracks Mountain Bike News Lost a Valve Stem for Your Tubeless Rims? Orange Seal Has You Covered - Singletracks Mountain Bike News](https://images.singletracks.com/blog/wp-content/uploads/2017/09/orange_seal_rvc_valve_kit.jpg)
Lost a Valve Stem for Your Tubeless Rims? Orange Seal Has You Covered - Singletracks Mountain Bike News
![Amazon.com: i72 Tubeless Valve Stems 40mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors Amazon.com: i72 Tubeless Valve Stems 40mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors](https://m.media-amazon.com/images/I/71acytSK-dL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: i72 Tubeless Valve Stems 40mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors
![Amazon.com: i72 Tubeless Valve Stems 36mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors Amazon.com: i72 Tubeless Valve Stems 36mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors](https://m.media-amazon.com/images/I/71rNo16lopL._AC_UF350,350_QL80_.jpg)
Amazon.com: i72 Tubeless Valve Stems 36mm Presta Pair - Brass Made with Core Remover Tool, Round Rubber Base with O-Ring for Better Sealing : Sports & Outdoors
![Mtb Tubeless Valve Core Mtb | Valve Core Presta Tubeless | Brass Bicycle Presta Valve - Bicycle Valve - Aliexpress Mtb Tubeless Valve Core Mtb | Valve Core Presta Tubeless | Brass Bicycle Presta Valve - Bicycle Valve - Aliexpress](https://ae01.alicdn.com/kf/Sfc203d92ebb74f4e9ad9c7c40e79932ee/Bicycle-Presta-Valve-Core-Brass-Material-CNC-machined-Nickel-plated-For-MTB-Road-Tubeless-Rim-Nozzle.jpg)