Der WEH® TW04 Quick Connector provides fast leak tight connections to components with external threads for testing, filling, plugging and venting. Only hand-tighten the connector onto the thread until the o-ring seal contacts the test piece. The MET seals without wrenches, sealants or tape. NBR seals meet most industrial requirements. WEH® TW04 is available as a connector with media inlet and as a plug.