Electrical insulating materials; Electrical insulating rubber products; Fittings, not of metal, for flexible pipes; Flexible pipes, not of metal; Heat shrink nylon tubing for covering electrical wire and nylon grommets; Insulating refractory materials; Insulating tapes; Multi-purpose thermoplastic heat shrinkable tubing; Non-metal pipe couplings and joints; Pipe joint tape; Pipe muffs, not of metal; Rubber sleeves for protecting parts of machines; Rubber tubes and pipes; Sealing and insulatin...