Dowsil 791 is a one-part neutral silicone for weather sealing.
It is used for both commercial and domestic applications and provides excellent adhesion to most exterior substrates.
It has excellent weathering characteristics, including resistance to ozone, UV radiation and temperature extremes.
It has a 20-30 minutes working time and it is tack-free in 30 minutes.
Conforms to ISO 11600-25LM and also meets ISO specfication 9047 class 50.
Highly flexible with a joint movement capacity 50% and an application temperature range -25 to +50C.