SpecSeal® SSP Putty is a non-hardening, intumescent compound designed to seal through-penetrations as well as certain membrane penetrations (med-gas valve box, tub & shower valve, clean-out tee) against the spread of fire, smoke and hot gasses. SpecSeal® Putty expands up to eight times its original size when exposed to high temperatures or flames.
- Available in bars or preformed pads
- Remains pliable and workable for the lifetime of the installation
- Acoustically tested
- Will not harden over time
