Show all documents

Sikasil® WS-305 S

High performance silicone Weatherproofing sealant

Sikasil® WS-305 S is a durable neutral-curing silicone sealant with a high movement capability and good adhesion to a wide range of substrates. It is particularly suited as a weather seal for structural glazing, curtain walling and windows.  

  • Meets requirements of GB/T 14683 and ASTM C 920 for Type S, Grade NS, Class 50 (movement capability ± 50 %)
  • Very good UV and weathering resistance
  • Adheres well to many substrates including glass, metals, coated and painted metals, plastics and wood
  • Conformity with LEED v4 EQc 2: Low-Emitting Materials
Show all documents