Butylver® Primary Sealant

Butylver® Primary Sealant. Fenzi Butylver®, is a one part polyisobutylene PIB based material, totally solvent free especially formulated for use as the primary seal in double sealed units. Fenzi Butylver® PIB allows for minimum water vapour and gas permeation. Butylver® has excellent adhesion properties to glass and metal spacer systems and can be used together with Fenzi Thiover® Polysulphide and other conventional secondary sealants.

  • Application temperature between 130° C and 150° C
  • Moisture vapour transmission maximum 0.03 (g/m2 – 24hr-2mm), in accordance to EN 1279/4

Ordering Information

Fenzi LogoButylver® Primary Sealant