O-rings; Fittings, not of metal, for pipes; Non-metal fittings for pipes; Insulating materials for construction; Insulation for underground pipes and tanks; Adhesive sealants; Adhesive sealant compounds; Adhesive sealant and caulking compound; Gasket sealer for use in plumbing; Grout sealant; Joint sealants; Non-metal sealing rings for use as connection seals; Non-metal seals for plumbing and liquid storage tank pipe connections; Non-metal seals for use in plumbing, water supply, and liquid s...