Everkem

Everkem Diversified Products manufactures firestopping caulks, performance sealants, foam sealants, electrical chemicals, and application tools in Winston-Salem, North Carolina. Many Everkem case variants ship free in the contiguous US.

What Everkem makes

Everkem's firestop line covers FS814+ intumescent caulk for through-penetrations, Intumescent Firestop Collars in 1.5", 2", 3", and 4" sizes for plastic pipe, Fire-Rated Putty Pads for 1- and 2-hour gypsum walls, and Firestop Pillows for large voids. Performance sealants span TruSil 100 silicone (ASTM C920, NSF 51), Hi-Temp Silicone rated for continuous 500°F exposure, SilTex 40 siliconized acrylic latex with 40-year durability, and Sound Seal 90 draft, smoke, and acoustical sealant. See the specialty sealants and caulks collection for the Everkem sealants we stock, or the 2025 sealant and caulking guide for chemistry selection. For commercial-roofing details, the commercial roof flashing and penetration sealants guide covers where the silicone and firestop families fit on a commercial roof, and where they don't.

Made in Winston-Salem, NC

Everkem manufactures its full product line in Winston-Salem, North Carolina. The company is a member of STAFDA, HARDI, and iMark Group and runs a line-wide low-VOC certification program called EcoSeal.

Standards and compliance

Silicone sealants meet ASTM C920. Firestop products carry UL 1479 classifications. Sound Seal 90 supports ASTM E90 sound-rated assemblies. FS814+, SilTex 40, Sound Seal 90, and TruSil 100 carry LEED v4 documentation, and TruSil 100 and Hi-Temp Silicone carry NSF 51 for incidental food contact.

Cross-reference for competitor part numbers

Our sealant cross-reference maps SKUs from Boss, DAP, Hilti, OSI, Sika, 3M, and other major brands to in-stock Everkem equivalents. For full datasheets and the broader product catalog, see Everkem's product directory.