This FEP-VMQ - MVQ - Silicone O-Ring has a diameter of  mm and is Red in color. The hardness of this O-ring 490x8 - FEP-VMQ - MVQ - Silicone - FDA - Shore A - Red - ORS223931 is . Alternative names for the compound are FEP-VMQ / VMQ - FEP Encapsulated / FEP-Silicone / Silicone FEP Encapsulated, and it is commonly produced by Teflex FEP-O-SEAL®. The O-Ring is typically used in and has an operating temperature range from -55 ºC to 200 ºC. O-Rings 6597131 are referred to as 223931 and have a DIN 3771 size of . This item is equivalent to and has an FDA approval. The chemical name of this O-Ring is Teflon® fluroropolymer - Silicone.