Sikasil® WS-305 S

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

Sikasil® WS-305 S can be used for weatherproofing sealing appli­cations where durability under severe conditions is required. It is particularly suited as a weather seal for structural glazing, curtain walling and windows. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.