When Flexitallic invented the spiral wound gasket in 1912, there was nothing like it. Now, 100 years of innovation later, the company has launched the Change™ gasket.

Robust and resilient, the metal wound heat exchanger gasket is designed to deliver the most dynamic seal ever.

The Change gasket is manufactured with proprietary equipment, using a five-times thicker metal spiral and a unique laser welding process that penetrates completely through the winding, so it requires no inner or outer ring and is easy to handle and install as a double-jacketed gasket.

In addition, it is proven to perform without fail at least 60% longer than any other heat exchanger gasket, including the spiral wound, double jacketed, corrugated or kammprofile.


  • Excellent compression and recovery
  • High performance in thermal cycle applications
  • Robust and versatile design
  • Fire-safe API 6FB