CRL 1/8" x 1/2" x 2" Neoprene Setting Blocks - 80 Durometer Putty & Accessories It should not be used

It should not be used for the following applications: structural glazing applications

ASTM E-119 Fire Tests of Building Construction and Materials

It is not just a surface cover-up

Always use the correct size Backer Rod for the particular application

CRL 1/8" x 1/2" x 2" Neoprene Setting Blocks - 80 Durometer Putty & Accessories It should not be usedThe 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