*Offer valid 12/26/16-12/30/16 while supplies last at participating Hallmark Gold Crown stores in the U.S.A. and at Hallmark.com. Discount will be taken on equal or lesser-valued item. Not valid on past purchases. Hallmark.com orders require U.S. billing and shipping addresses.
Depending on the application and the designof the seal, the material used may be nitrile, polyacrylate, fluoroelastomer(Viton), silicone, nylon or TeflonÂ¨. Nitrile is one of theleast expensive materials, and has been used for many years inumbrella or deflector type seals for older pushrod engines.
Sanding sealers must be matched to the top coat. There are specific types of sanding sealer for two part lacquer finishes and for polyurethane oil based finishes. This brings us to shellac as a sanding sealer. It is only in the past few years that shellac has recieved any mention as a sanding sealer.