Buna-N Nitrile O-Rings (NBR) 70 Duro Low Temp Mil-Spec

Freudenberg Buna-N N888 is a specialty low-temperature nitrile rubber designed for reliable sealing performance in cold environments, with flexibility down to around –65 °C. It provides excellent resistance to fuels, oils, and hydraulic fluids while maintaining the mechanical strength and durability expected of high-grade nitriles. N888 is widely recognized in aerospace and defense applications and is qualified under several key military specifications, including MIL-R-3065, MIL-R-83248, MS28775, and MIL-R-73528, making it a trusted choice where both low-temperature resilience and compliance with stringent standards are required.

Provides excellent performance in temperatures ranging from -65°F to +250°F (-54°C to +121°C).