Sonkit cryogenic metal seals are C-ring and O-ring geometries for liquid-nitrogen, liquid-helium, and other low-temperature service. Metal jackets keep load when elastomers go glass-hard. Applications include cryostats, LNG valves, aerospace tanks, and semiconductor cryopumps. We size the ring to the groove and temperature cycle. Materials and plating follow the media and flange. Made in Shanghai. ISO 9001:2015.

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