+3 O-Ring Replacement for Ball Valve 400000013145 $0.99 In stock Quantity: 1 Add to Bag Product Details Replacement O-Ring for the OLDER (before 2005) ball valve, sight gauge, and thermometer. 1/2" ID with a 1/8" cross section. This is made of ethylene Propylene. This will withstand temperatures to 400 degrees and ultra violet light. Save this product for later Favorite