STI SSP Firestop Putty is a one-part, two stage, non-hardening compound designed to seal through-penetrations. Perfect for use with sealing cabling penetrations and outlet boxes. 36 in3 bar
SSB Intumescent fire stop putty non-hardening putty pads are easily applied with no mess or excessive residue. SpecSeal Series® SSP putty is a non-hardening, intumescent compound designed to seal through penetrations as well as certain membrane penetrations against the spread of fire, smoke and toxic gasses.
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Specification Sheet