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

It conforms to ASTM C920 Type S

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

Paddle head is 4-1/4" (108 mm) wide

Works On Your Vehicle's 12V DC Power or Optional 110V AC Adapter

CRL RTV408 seals curtainwall joints

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