Big Graphite Flat gasket for Heavy Machine Our factory can provided various sizes of filled and unfilled PTFE flat gasket as per request, the OD range is 20-3300mm. PTFE Flat Gasket is a thin plate (typically disk-shaped, but sometimes square) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener, such as a bolt or nut. Other uses are as a spacer, spring (Belleville washer, wave washer), wear pad, preload indicating device, locking device, and to reduce vibration (rubber washer). Sample: Freely Business type: Manufacturer Delivery time:7~10 days