This Silicone - VMQ - MVQ O-Ring has a diameter of 4.48x1.78 mm and is Red in color. The hardness of this O-ring 4.48x1.78 - Silicone - VMQ - MVQ - 50 Shore A - Red - ORS232761 is 50. Alternative names for the compound are Silicone Rubber - PVMQ, and it is commonly produced by Silastic® | Elastosil® | Silopren® | NuSil® | Shin-Etsu Silicone® | Silbione® | Keisper®. The O-Ring is typically used in and has an operating temperature range from -60˚C ºC to 203 ºC. O-Rings 909448 are referred to as 232761 and have a DIN 3771 size of 4.48x1.78. This item is equivalent to and has an approval. The chemical name of this O-Ring is Methyl Vinyl Siliconenrubber / Vinyl Methyl Siloxaan.