CRL Black 2" Open Cell Backer Rod - 102' Finish:Black It conforms to ASTM C920

It conforms to ASTM C920 Type S

CRL RTV408 seals curtainwall joints

One of the surfaces to be bonded must be porous

Technical Data It meets or exceeds the following specification standards: Federal Specifications TT-S-001543A (COM-NBS) Class A for silicone building sealants

Sika: SikaSil®-N Plus

CRL Black 2" Open Cell Backer Rod - 102' Finish:Black It conforms to ASTM C920Open 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