CRL Black 1-1/2" Open Cell Backer Rod - 100 Foot Roll Putty & Accessories To ensure a good sealant

To ensure a good sealant bond

Cools to approximately 40F/22C below outside temperature

TT-S-001543A (COM-NBS) Class A for Silicone Building Sealants

Prism™ also works on acidic surfaces

It is ideal for use in situations where joint damage has occurred

CRL Black 1-1/2" Open Cell Backer Rod - 100 Foot Roll Putty & Accessories To ensure a good sealantOpen Cell, No Skin, Non Gassing Rod is Compatible With All Cold Applied Sealants Controls Depth of Sealant and Acts as a Bond Breaker Soft, Compresses Easily CRL Open Cell Backer Rod is a soft, round, and easily compressible open cell polyurethane foam. Open Cell Backer Rod is not adversely affected by dynamic joint movement, and its inherent flexibility applies itself to joint variations very easily. It is ideal for use in situations where joint