Described herein are sealant compositions with low shrinking volume. The sealant compositions include a glass filler. The sealant compositions are useful in a variety of building and construction applications, as well as interior or exterior trim work applications.

Disclosed is a lip seal for water pump made of a rubber-like elastic material, fixed to a housing as a fixed side and in sliding contact with a shaft rotating relative to the housing; the lip seal having sliding surface with a surface roughness Ra (according to JIS B0601 corresponding to ISO 4287) of 1 to 30 m, being obtained by vulcanization-molding of a rubber composition comprising 100 parts by weight of the rubber-like elastic material, 1 to 150 parts by weight of a reinforcing filler, 5 to 90 parts by weight of a non-reinforcing filler having an average particle diameter of 1 m or more, 0.1 to 5 parts by weight of a coupling agent, 1 to 15 parts by weight of a co-crosslinking agent, and 0.5 to 10 parts by weight of an organic peroxide. The lip seal effects to prevent softening and volume swelling of the rubber-like elastic material and furthermore the generation of deposits in the rotating shaft, which are problematic for rotation torque and LLC resistance.

Provided are low-density sealing compositions having high tensile strength and a method of producing the same. The sealing compositions may contain a polyvinyl chloride resin, surface-treated hollow glass microspheres and a plasticizer, and contains 30 to 60 vol % hollow glass microsphere.

A composition adapted for the production of a thermosetting elastomer with antimicrobial capabilities by vulcanization by molding includes an elastomer, a catalyst and/or a vulcanization activator, and an antimicrobial additive that includes zinc pyrithione and silver phosphate glass in a 1:1 ratio by weight.

Sealant compositions for conferring unpainted corrosion resistance to a metal surface, such as an aluminum alloy, methods for conferring corrosion resistance by applying the sealant compositions, and metal surfaces, components, and articles that have been thereby rendered corrosion resistant, wherein the sealant compositions may be substantially free of chromium (VI), permanganate, heavy metals, or lanthanide rare-earth metals, and can provide performance similar to the military Class 1A specification by conferring protection against corrosion, whether painted or unpainted.

Disclosed herein are plumber's putty compositions that avoid staining the surfaces plumbing parts to which they are applied in order to provide a watertight seal, including plastics, such as acrylonitrile butadiene styrene (ABS) plastic, while providing the pliability and softness of traditional putties. Also provided are methods of providing a seal about a plumbing part comprising contacting the plumber's putty composition according to the present disclosure with the plumbing part.