WS-8032 Class BLow Weight Fuel Tank Sealant WS-8030 is a two component light weight manganese dioxide cured polysulfide sealant designed to meet the requirements of AMS 3281 fuel tank specifications. It has outstanding adhesion to the common aerospace substrates as well as excellent sealing characteristics at temperatures ranging from -65F (54C) to 250F (121C), including intermittent exposure up to 360F (182C).WS-8030 Class B exhibits excellent elastomeric properties and retention after prolonged exposure to jet fuel and aviation gasoline.Specification: AMS3281 TY1 Interchangeable with PPG: PR-1776M B1/2, PR-2007 B1/2Interchangeable with Flamemaster: CS5530 B1/2