The Flat Gasket BSP 4 1/2" is used for waterproof and airtight connection of two threads according to the standard EN ISO 228, by screwing an external thread into an internal thread, in which there is a Flat Gasket BSP in the Size 000. The Flat Gasket BSP 4 1/2" has an outer diameter of 126mm and an inner diameter of 105mm, with a Thickness of 3mm. The Material is NBR. Color: black. Operating Temperature: -40°C - +110°C.