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2. Concrete sealer - Wikipedia

   en.wikipedia.org/wiki/Concrete_sealer

   In past decades attempts to protect concrete have included sealers ranging from wax to linseed oil. Today, high quality concrete sealers can block up to 99% of surface moisture. There are two main sealer categories: topical sealers (coatings) and penetrating sealers (reactive).

3. Stone sealer - Wikipedia

   en.wikipedia.org/wiki/Stone_sealer

   Since ancient times, stone has been popular for building and decorative purposes. It has been valued for its strength, durability, and insulation properties. It can be cut, cleft, or sculpted to shape as required, and the variety of natural stone types, textures, and colors provide an exceptionally versatile range of building materials.

4. RTV silicone - Wikipedia

   en.wikipedia.org/wiki/RTV_silicone

   RTV silicone rubber can be used to cast materials including wax, gypsum, low-melt alloys/metals, and urethane, epoxy, or polyester resins (without using a release agent). A more recent innovation is the ability to 3D print RTV silicones.

5. Rubber toughening - Wikipedia

   en.wikipedia.org/wiki/Rubber_toughening

   Crazing in polymers This is a cartoon representation of failure mechanisms in epoxy resins. The numbers correspond to the following. "(1) shear band formation, (2) fracture of rubber particles, (3) stretching, (4) debonding and (5) tearing of rubber particles, (6) transparticle fracture, (7) debonding of hard particles, (8) crack deflection by hard particles, (9) cavitated rubber particles ...

6. Silicone - Wikipedia

   en.wikipedia.org/wiki/Silicone

   Silicone is often used to seal maintenance access openings in aerospace equipment. Silicone is a widely used material in the aerospace industry due to its sealing properties, stability across an extreme temperature range, durability, sound dampening and anti-vibration qualities, and naturally flame retardant properties. Maintaining extreme ...

7. Sulfur vulcanization - Wikipedia

   en.wikipedia.org/wiki/Sulfur_vulcanization

   Worker placing a tire in a mold before vulcanization. Sulfur vulcanization is a chemical process for converting natural rubber or related polymers into materials of varying hardness, elasticity, and mechanical durability by heating them with sulfur [citation needed] or sulfur-containing compounds. [1]