CRL 3/16" x 7/8" x 2" Neoprene Setting Blocks - 80 Durometer Putty Knives & Caulking Spatulas a thin film of oil

a thin film of oil is deposited on the glass

An oscillating buffer or microfiber towel may be used for large areas and hard to clean surfaces

Backer Rod is typically used in expansion/control joints where cold-applied sealants are used

all old sealant must be removed

It also works well with plastic

CRL 3/16" x 7/8" x 2" Neoprene Setting Blocks - 80 Durometer Putty Knives & Caulking Spatulas a thin film of oilThe Preferred Method for Centering and Cushioning Glass 80 Durometer Hardness A variety of sizes are available from stock CRL Neoprene Setting Blocks cushion and support glass, and act as a centering device for glass installed in channels. The neoprene composition of the blocks makes them resilient, so that glass cushioned by them can withstand vibration, shock, and heavy wind loads. A variety of sizes are available from stock. NOTE: May discolor