FX Wildcat? O-ring kits,sizes? | Airgun Forum | Airgun Nation | Best Airgun Site | Airgun Message Board
4. Size List - O-Rings-Stock O-Ring Webshop
Amazon.com: JUN-STORE O-Rings CS3.1mm 100PCS Silicone O Ring OD 17/18/19/20/21/22/23/24x3.1mm O-Ring VMQ Gasket Seal Thickness White Red Rubber 3.1mm ORing SENMIAO-TH (Size : OD24x3.1mm White) : Industrial & Scientific