Bostik S301 SILICONE CLASSIC is a versatile acetoxy silicone sealant for expansion and construction joints that cures by reacting to moisture to form a durable elastic rubber seal. The product is UV and weather resistant.

BENEFITS 

• Excellent resistance to UV, water and weather
• Perfect adhesion to glass, painted wood, ceramic and enamelled
• Permanently elastic
• Colourfast

APPLICATIONS

Bostik S301 SILICONE CLASSIC is specifically developed as a universal sealant for sealing construction and expansion joints.

DIRECTIONS OF USE

A joint with the correct dimensions is able to absorb movements between building materials. The joint depth should always be in the correct relationship of the joint width. A general rule is the ratio of joint depth to the width of the joint with a joint width up to 10mm is 1:1, with a minimum of 5mm in width and depth. For joints wider than 10mm, the depth is the width divided by 3 plus 6mm.

LIMITATIONS

• Not suitable for PE, PP, PC, PMMA, PTFE, soft plastics, neoprene and bituminous substrates
• Not suitable for applications on concrete, marble, lead, copper and galvanized steel

SURFACE PREPARATIONS AND FINISHING

Application temperature 5°C to 40°C (applies to environment and substrates). All substrates must be solid, clean, dry, and free of grease and dust. Clean substrates with Bostik Cleaner. Bostik S301 SILICONE CLASSIC adheres perfectly without the use of a primer to most non-porous substrates. Porous substrates to be pre-treated with Bostik Primer. Always test adhesion prior to application. Use Bostik Finisher to smooth the joint.

PAINTABILITY

Bostik S301 ACETOXY GP SILICONE is not paintable. We recommend covering the edges of the joint with masking tape to prevent surfaces that need to be painted from being contaminated by silicone. CLEANING Uncured material and tools can be cleaned by using Bostik Cleaner. Cured material can only be mechanically removed. Hands can be cleaned with Bostik Wipes.

COLOUR(S)

- White

SHELF LIFE

In unopened original packaging between 5°C and 25°C, shelf life is up to 18 months from production date, stored in a dry place.