Permatex 85249 Hylomar Universal Blue Racing Formula Gasket Dressing and Flange Sealant, 1.2 oz. Non-chlorinated gasketing and sealing compound Withstands rapid changes in temperature and remains flexible and tacky No-run formula seals surface imperfections on machined flanges and is vibration resistant Non-hardening and non-setting, allowing repeated disassembly and reassembly in high performance applications Possesses dust and moisture proofing properties