Product Description:
The 3M SIL100 White is a high-performance 100% silicone sealant designed for sealing, bonding, and repair work that requires outstanding weather resistance. It adheres strongly to a wide range of construction and industrial materials such as gutters, roofing, awnings, water tanks, coated metal panels, automotive, and marine components.
Made from 100% pure silicone, it provides high elasticity, long-term durability, and excellent heat resistance from −62°C to 204°C. Its neutral-cure formula is odorless, non-acidic, and safe for use on metals and delicate surfaces. The smooth white finish delivers a clean, professional result for all sealing applications.
Key Features:
 
 
100% pure silicone formulation — durable, flexible, and weather-resistant
 
 
Excellent heat resistance (−62°C to 204°C)
 
 
Neutral-cure, non-corrosive, and low-odor formula
 
 
Strong adhesion to glass, ceramic, aluminum, steel, zinc, copper, brass, painted surfaces, plastics, and non-oily wood
 
 
Ideal for sealing joints, gaps, and leaks in construction and industrial settings
 
 
Easy to apply and provides a watertight, long-lasting finish

Recommended Applications:
 
 
Construction: gutters, roofing, awnings, water tanks, coated metal walls
 
 
Industrial sealing and repair
 
 
Automotive and marine assembly and maintenance
 
 
Glass, tile, and metal bonding applications

How to Use:
 
 
Clean the surface thoroughly — ensure it is dry and free from dust, oil, or grease.
 
 
Insert the cartridge into a standard silicone gun.
 
 
Cut the nozzle tip at a 45° angle and apply evenly along the joint or desired surface.
 
 
Smooth the sealant before curing for a clean and watertight finish.