HoldRite® HydroFlame™ Firestop Sealants

Seal against fire, smoke and gas with HydroFlame sealants.

HydroFlame firestop products include a full suite of sealants, or fire caulk, to protect vertical & horizontal construction assemblies from flames, smoke and gases while also dampening noise transfer between piping and building structures.

HoldRite offers four different types of fire caulk sealants with different price points and features so you can find the best fit for your job. All are safe for plastic and metal pipes, easy to apply, and have the flexibility to freeze and thaw while maintaining protection. Compare the HydroFlame 50, 100, 200 and 300 series firestop sealants to find the right fit for your job.

HydroFlame 50

Smoke & Acoustic Sealant

Ideal when using HoldRite Silencer™ noise & vibration dampening systems.

HydroFlame 100

Firestop Sealant

Ideal for fire-rated construction assemblies in wood frame or concrete construction.

HydroFlame 200

Intumescent Sealant

Elastomeric water based sealant ideal for intumescent firestop applications.

300CG group

HydroFlame 300

W-Rated Firestop Sealant

Ideal for areas needing fast curing or where vibration or moisture is expected.


“FBC™ System Compatible indicates that this product has been tested, and is monitored on an ongoing basis, to assure its chemical compatibility with FlowGuard Gold®, BlazeMaster® and Corzan® piping systems and products made with TempRite® Technology.” “The FBC System Compatible Logo, FBC™, FlowGuard Gold®, BlazeMaster®, Corzan®, and TempRite® are trademarks of Lubrizol Advanced Materials, Inc. or its affiliates.”

Guide to HydroFlame Firestop Sealants

There are so many different brands and varieties of firestop sealants and fire caulk that it can be overwhelming to sift through the products. Get tips on selecting a sealant and know the specific features you should look for.