3M SJ Cold Shrink Foldback Splice Jacket Kit contains a cold shrink foldback jacket tube, rolls of rubber mastic tape and mastic strips. The mastic tape offers an assured sealing interface between the cable jacket and cold shrink foldback jacket tube. The mastic strip seals around the optional, external ground conductor. The cold shrink jacket tube is made from chloride and sulfur free EPDM rubber. The seamless rubber tube from cable jacket to cable jacket minimizes sealing steps and moisture ingress paths.