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2. Porosity sealing - Wikipedia

   en.wikipedia.org/wiki/Porosity_sealing

   Impregnation Chamber: The operator would seal the chamber and draw a vacuum. This would remove air in the porosity and leak path in the casting wall. Parts would then be covered with sealant, and positive pressure applied. More energy would be required to penetrate the porosity with sealant than to evacuate the air.

3. Loctite - Wikipedia

   en.wikipedia.org/wiki/Loctite

   Loctite is an American [1] brand of adhesives, sealants, surface treatments, and other industrial chemicals that include acrylic, anaerobic, cyanoacrylate, epoxy, hot melt, silicone, urethane, and UV/light curing technologies. Loctite products are sold globally and are used in a variety of industrial and hobbyist applications.

4. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   Replacing the roofing felt on a Scout hall in Wales. Bituminous waterproofing systems are designed to protect residential and commercial buildings.Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous, and waterproof. [1]

5. Orangeburg pipe - Wikipedia

   en.wikipedia.org/wiki/Orangeburg_pipe

   Orangeburg pipe was made of wood pulp sealed with liquified coal tar pitch in inside diameters from 2 inches to 18 inches, with a perforated version for leach fields. . Joints were made of the same material, and, because of the residual stickiness of the coal tar, were sealed without adh

6. Sealant - Wikipedia

   en.wikipedia.org/wiki/Sealant

   Sealant is a substance used to block the passage of fluids through openings in materials, [1] a type of mechanical seal. In building construction sealant is sometimes synonymous with caulk (especially if acrylic latex or polyurethane based) [2] and also serve the purposes of blocking dust, sound and heat transmission. Sealants may be weak or ...

7. 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.