(1) A continuous film or penetrant to prevent the passage of liquids or gaseous media; a high-bodied adhesive generally of low cohesive strength to fill voids of various sizes to prevent passage of liquid or gaseous media. (2) A coating used to seal the sand-scratched surface of a primer in order to obtain a smooth uniform paint base over rough metal. Sealers are products of low pigmentation.
A liquid coat that seals wood, plaster, etc., and prevents the surface from absorbing paint or varnish. Sealers may be transparent, and can act as primers. Some sealers are designed to be left uncoated.
A substance you can add to the liquid in the cooling system to seal leaks. Also called stop-leak. Other kinds of sealing compounds are used to coat surfaces before installing hoses or gaskets. These are effective in preventing leakage but usually make the hose or gasket hard to remove.
A coating sprayed prior to the top coats that can help with color coverage but normally will be used for helping to hide sand scratches and also help prevent the top coats from shrinking into a more porous substrate like primer.
An object representing the right to send a message to another E-object. A sealer seals an envelope encapsulating the parameters of a message, and ensures that this message can only be read by an object with the appropriate unsealer.