This HNBR O-Ring has a diameter of  mm and is Black in color. The hardness of this O-ring 37x2.49 - HNBR - 90 Shore A - Black - ORS232712 is 90 Shore A. Alternative names for the compound are Hydrogenated Nitrile Butadiene Rubber, and it is commonly produced by LG Chem - Lanxess and Zeon. The O-Ring is typically used in and has an operating temperature range from -25 ºC to 150 ºC. O-Rings 894630 are referred to as 232712 and have a DIN 3771 size of . This item is equivalent to and has an approval. The chemical name of this O-Ring is Hydrogenated nitrile rubber.