The Flat Gasket BSP 4" 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" has an outer diameter of 113mm and an inner diameter of 102mm, with a Thickness of 3mm. The Material is NBR. Color: black. Operating Temperature: -40°C - +110°C.