Ø250 Door lever O-ring

The 250 mm diameter lever door seals are mounted on shutters (lever doors) used to close a bag ring or a transfer airlock door. Bag ring seals are typically operated from inside a glove box. On a transfer lock with two doors, it is recommended that both door seals be replaced at the same time. A lever door seal should always be lightly greased (vacuum grease) and replaced if found to be faulty. A seal in poor condition can affect the proper functioning of the door and potentially jeopardise the safety of the installation or the handling in progress.