Sikasil® WS-305 AM

Sikasil® WS-305 AM is a neutral curing silicone sealant with high movement capability and excellent adhesion to a wide range of substrates. It is particularly suited as a weather seal for curtain walls and windows.

• Meets the requirements of ASTM C920 Type S, Grade NS, Class 50, Use M,G,A
• Meets the requirements of ASTM C1184, Type S, Use G,A
• Meets the requirements of AAMA 803.3 and 808.3
• ASTM E84 with a Flame Spread Index of 15 (Class A acc. to IBC)
• Los Angeles Research Report (LARR) approved
• Good UV and weathering resistance
• Adheres well to many substrates including concrete, glass, metals, coated and painted metals, vinyl, and wood.

• White 
• Dark Bronze
• Bronze
• Black
• Aluminum
• Aluminum Gray
• Anodized Light Gray