P.T.F.E. Sealants And Tapes Quick-Seal MB4 9654/MB4 Quick-Seal MB4 9654/MB4 is a sealant tape made of 100 % virgin, expanded PTFE manufactured by a special process giving the tape a multi-directional fibre structure with a self-adhesive strip on one side. Quick-Seal MB4 9654/MB4 is currently the first and only multidirectional ePTFE tape with approval and certification according to Germany's TRD 401 /VdTÜV-Merkblatt Dichtung 100 regulation and is especially adapted to the needs of inspection hole and man-hole connections. Contact Us Enquire Now