Blind Flanges

Fiberglass blind flanges are designed to seal the end of a flanged pipe, nozzle, or tank connection, providing a secure closure for unused or future process connections. Commonly used in industrial piping systems, storage tanks, and chemical processing applications, fiberglass blind flanges offer excellent corrosion resistance while remaining lightweight and durable.

Heartland Fiberglass Supply offers industrial-grade fiberglass blind flanges manufactured to meet or exceed PS-15-69 requirements, resulting in a superior void-free laminate and resin-rich liner for dependable long-term performance.

Our fiberglass blind flanges are available with resin systems using two of the industry's primary recommended initiators: methyl ethyl ketone peroxide (MEKP) and benzoyl peroxide (BPO) for sodium hypochlorite environments.