This FEP-FKM - FPM - Viton® O-Ring has a diameter of 175x4 mm and is Black - Translucent in color. The hardness of this O-ring 175x4 - FEP-FKM - FPM - Viton® - FDA - Black - Translucent - ORS173369 is . Alternative names for the compound are Viton® - FKM, and it is commonly produced by Teflon® FEP | Neoflon® FEP | Dyneon® FEP. The O-Ring is typically used in and has an operating temperature range from -20 ºC to 205 ºC. O-Rings 6557181 are referred to as 173369 and have a DIN 3771 size of 175x4. This item is equivalent to and has an FDA approval. The chemical name of this O-Ring is Gefluoreerd Ethyleen-Propyleen-Copolymeer / Fluorcarbonrubber.