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GFS FKM 90A Mil-Spec is an AMS-7259 (M83248/2) certified, 90-Durometer High Performance Black FKM O-ring material. Compared to the more widely used 75A durometer version of this material, GFS FKM 90A can be utilized for higher pressure applications that would cause a softer material to extrude and fail. This material has a broad spectrum of excellent resistance to a variety of chemicals and performs well at high temperatures. Due to FKM's wide range compatibility, temperature range, low compression set, and excellent aging characteristics, FKM is considered one of the most significant elastomers developed in recent history.

O-Ring Size (AS-568) : 014
Inner Diameter (In.) : 0.489
Cross Section (In.) : 0.070
Specification : AMS-7259
O-Ring Size Series : 000 Series