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2. Stone sealer - Wikipedia

   en.wikipedia.org/wiki/Stone_sealer

   Stone sealing is the application of a surface treatment to products constructed of natural stone to retard staining and corrosion. [1] All bulk natural stone is riddled with interconnected capillary channels that permit penetration by liquids and gases.

3. Liquid-impregnated surface - Wikipedia

   en.wikipedia.org/wiki/Liquid-impregnated_surface

   A slippery liquid-infused porous surface (SLIPS), liquid-impregnated surface (LIS), or multi-phase surface consists of two distinct layers. The first is a highly textured or porous substrate with features spaced sufficiently close to stably contain the second layer which is an impregnating liquid that fills in the spaces between the features.

4. Porosity sealing - Wikipedia

   en.wikipedia.org/wiki/Porosity_sealing

   Porosity sealing is done through the process of vacuum impregnation. Vacuum impregnation is a preferred OEM process that seals porosity and leak paths in metal castings, sintered metal parts and electrical castings that form during the casting or molding process.

5. Sealant - Wikipedia

   en.wikipedia.org/wiki/Sealant

   In the 17th century glazing putty was first used to seal window glass made with linseed oil and chalk, later other drying oils were also used to make oil-based putties. [4] In the 1920s, polymers such as acrylic polymers, butyl polymers and silicone polymers were first developed and used in sealants. By the 1960s, synthetic-polymer-based ...

6. Roofing slates - Wikipedia

   en.wikipedia.org/wiki/Roofing_slates

   Roofing slates are roofing tiles made out of slate. The rock is split into thin sheets which are cut to the requires size before shipment. This contrasts to slabs which are milled to produce larger structural components. [1] They are the primary product of the slate industry.

7. Concrete sealer - Wikipedia

   en.wikipedia.org/wiki/Concrete_sealer

   Concrete sealers are applied to concrete to protect it from surface damage, corrosion, and staining. They either block the pores in the concrete to reduce absorption of water and salts or form an impermeable layer which prevents such materials from passing.