https://www.ebay.com/sch/i.html?_nkw=3M+Red+Fire+Barrier+Sealant+5+Gal+&_sacat=0&_dmd=2

3M Red Fire Barrier Sealant,5 Gal.

Regular price
$373.00
Sale price
$266.00

Firestop Sealant, Red, Container Type Pail, Size 5 gal, Up to 4 hr. Fire Rating, General Purpose, Application Method Airless Sprayer, Material Elastomeric, Standards ASTM E2307, ASTM E814 (UL 1479), ASTM E1966 (UL 2079), ASTM E1399, FM Approved, Fire Barrier Sealant