Sikasil-670 Fire - Fire resistant silicone joint sealant - Sika

Sikasil-670 Fire - Fire resistant silicone joint sealant - Sika

Sikasil-670 Fire is a fire -resistant, single-component, elastic sealant for joints , polymerizing under the action of air humidity and with a low modulus of elasticity.

Features

• Fire resistance up to 4 hours according to EN 1366-4
• Very good weather resistance
• Movement capability of ±35% (ASTM C 719)
• Easy application and smoothing
• Good adhesion to many different substrates
• Neutral polymerization

Application areas

Sikasil-670 Fire is developed for fire resistant sealing of expansion and connection joints, on porous substrates as well as non-porous substrates.

Application

1. Sikasil-670 Fire is supplied ready to use.
2. After the necessary preparation of the support, install in the joint at the required depth, a backing strip with a section adapted to the width of the joint.
3. Apply if necessary - a Sika primer.
4. Install a cartridge or pocket in a caulking gun.
5. Extrude Sikasil-670 Fire into the joint ensuring that it comes into contact with the lips of the joint everywhere and avoiding any inclusion of air bubbles.
6. When smoothing its surface, Sikasil-670 Fire must be pressed firmly against the lips of the joint to allow good adhesion.
7. It is recommended to use adhesive tapes if joints with clean and straight edges are required.
8. Remove the adhesive tapes before the putty forms a skin.
9. Do not use smoothing products containing solvents.

Consumption

Conditioning

300 ml cartridge and 600 ml pouch: White and Grey.