Moki Teflon Rings

Moki Teflon Rings 12mm inner diameter 14mm inner diameter   But my exhaust nuts always loosen.....   They exclusively loosen for those who tighten them. Hence, just don’t mess with them. Quick explanation :   The Teflon rings will be tightened at the factory, in COLD state, by tightening the overthrow nuts. Each ring is now under pre-load. Imagine placing a Teflon ring in a vice and tightening it. You now run the engine/heat up the Teflon. It will get soft and settle under the preload. As in a vice, if you would torch the Teflon the now soft would - due to the preload - move and then settle. THAT is what creates the seal! It was like wax flowing into gaps. If you now tighten the "vice" again you now destroy the perfect seal. Not only that, but you are quickly running out of usable Teflon as you preload for a second time, heat up and everything gives way for a second time. Only that as teflon already squeezed out the first time you now had less teflon left to work with. Leading to poor