ITEM NAME:Aluminum Outdoor Camping Gas Stove Adapter Valve Canister Gas Convertor #gib Store Home Promotion Hot Item Add to Fav.The seal ring is made of fluorine rubber, double-layered, resistant to -40 °~ 200 °. 1 x Gas Stove Refill Adapter Valve. Internal copper parts use 59 copper. The main part is 6061 aluminum alloy treated with fine polishing and by 460 ° high temperature heat hardness.