Sika BlackSeal® BT

Butyl rubber construction joint sealant and adhesive

Sika BlackSeal® BT is a butyl rubber, high solids, joint sealant and adhesive. The high solids formulation provides excellent gap filling properties without shrinkage.

  • 1-part ready to use
  • Dual use sealant and adhesive
  • Good adhesion to a range of substrates
  • Does not require primer
  • Can be applied on damp substrates