... sealant (PT302) It is Vinyl tri(butanone oxime) silane(VOS), a colorless (a little yellow) transparent liquid, ... vulcanized RTV.1.Product use: PT302 is a mild silane coupling agent, mainly for room temperature vulcanization silicone rubber, silicone ... rubber, glass for crosslinking agent (sulfurization agent), the active than methyl type curing agent high.2.Properties: Product colorless ...