Sashco 30623 5/8" x 50' Coil Pre-Caulking Backer Rod Epoxy lightweight

lightweight

Ideal for latex or oil based paints

polyurethanes and varnishes

which helps reduce heat build-up inside the respirator

Sashco 30623 5/8" x 50' Coil Pre-Caulking Backer Rod Epoxy lightweightBacker rod is a foam like material used to properly configure expansion contraction joints and to provide a surface that either the sealant will not adhere to or will be so flexible in its own right that, even though the sealant adheres to it, does not hinder the needed movement capability of the sealant itself. Backer rod comes in long lengths of a circular profile and is pressed into the joint just before the sealant is applied.