CRL Dual Hytrel Cup Caulking & Urethane Heaters/Coolers and function as a bond

and function as a bond breaker to prevent bottom side adhesion of the sealant

prime first with a high quality oil-based primer

It also works well with plastic

polyurethane sealant specifically formulated for dynamically moving building joints

NOTE: Cannot be cleaned with Cat

CRL Dual Hytrel Cup Caulking & Urethane Heaters/Coolers and function as a bondReplaces Worn Leathers in Bulk Load Guns The most commonly worn out component part in bulk caulking guns are the leather cups. CRL Dual Hytrel Cups replace the leather cups found in most 2" (51 mm) diameter barrels. Product images shown are of the actual product or a close representation. Colors can vary depending on your computer's video card and on how your monitor's color is adjusted.