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What does sealant mean?

Looking for the meaning or definition of the word sealant? Here's what it means.

Noun
  1. Any material used to seal a surface so as to prevent passage of a fluid.
  2. (construction) A mixture of polymers, fillers, and pigments used to fill and seal joints where moderate movement is expected.
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Examples
This type of failure occurs when the adhesion of the sealant to the substrate it was applied to fails.
To achieve a properly aged look for the new floor Canny had it installed without any sealant or protection.
Also gone is the spare wheel, replaced by a squirt-in-tyre sealant and a plug-in electric pump.
Caulking, sealant, and weather stripping will do the trick and are available at most hardware stores.
To prevent movement of the metal within the joint, a small bead of silicone sealant can be applied near the outside edges of the T flanges.
Silicone rubber is the ideal sealant for kitchens and bathrooms, as it is non-toxic and water-repellent.

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