Plastic seals for valves, faucets, and taps in the field of domestic and commercial plumbing; plastic wall seals for valves, faucets, and taps in the field of domestic and commercial plumbing; combination seals for valves, faucets, and taps in the field of domestic and commercial plumbing; water combination seals for taps, faucets, and valves in the field of domestic and commercial plumbing; water combination seals of nonmetallic materials for valves, faucets, and taps in the field of domesti...