This FKM - FPM - Viton O-Ring is 2,57 x 1,78mm and in the color Black. The Hardness of this O-ring 2.57x1.78 - FKM - FPM - Viton - FDA - EC1935/2004 - USP Class VI - BAM - 70 Shore A - Black - ORS222908 is 70 Shore A.The alternative names of the compound are and they are mostly produced by Viton® - Du Pont - 3M - Solvay - Daikin. The O-ring is commonly used in and has an operating temperature range from -25 ºC to 200 ºC. O-rings 6591037 are indicated as 222908 and have a DIN 3771 Size of 2,57 x 1,78. This item is equal to and has an FDA - EC1935/2004 - USP Class VI - BAM Approval. The chemical name of this Oring is Fluorocarbon Rubber.