Backer Rod 981 is used as ground when sealing with elastic sealants to ensure correct dimensioning of the sealant and to ensure that the sealant does not stick to the bottom of the joint. Hereby, improved elasticity as well as prolonged life of the joint is achived.
Backer Rod 981 consist of round profiles having open cells, making the product usable for inside joints.
Backer Rod 981 is deliverable in diameters from 20 to 50 mm.