Greene Tweed
Fusion® 665

A New Generation, Ultra-Low-Temp, Chemical-Resistant Elastomer

Fusion® FKM 665, Greene Tweed’s ultra-low-temperature and chemical-resistant elastomer, is specifically formulated to meet and exceed the requirements of Aerospace Material Specification (AMS) 7379, 7410 and AMS-P-83461.

With its broad temperature range (-70°F to 450°F/-57°C to 232°C), Fusion® 665 performs well at low temperatures with zero leakage.

Fusion® 665 was developed by Greene Tweed to overcome existing limitations of comparable materials, such as those found in FKMs, NBRs, or FVMQs/Fluorosilicone, by offering the following benefits:

  • Best-in-class high-temperature capabilities (450°F/232°C)
  • Outstanding low-temperature sealing
  • An extremely low compression set
  • Broad chemical compatibility
  • High-temperature sealing

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Contact Greene Tweed directly for more information on Fusion® 665: