Junctions, not of metal, for pipes; Pipe elbows, not of metal; Plastic conduit for plumbing use; Plastic plumbing hoses; Plastic thread, not for textile use; Rubber bars and rods; Rubber couplings for pipes; Sealing plugs made primarily from rubber; Non-metallic fittings for pipes; Non-metallic seals for conduits; Strapping tape; Stuffing of rubber or plastic; Non-metal fittings for pipes