SikaSeal®-305 Glass and Weather Seal

1-C silicone

12 months (when stored below 25°C)

Below 25°C

~1.09kg/l

-40°C to +150°C approx.

STANDARD THERMAL RESISTANCE ~180°C

SHORT TERM THERMAL RESISTANCE

+5°C to +40°C

SikaSeal® 305 cures by reaction with atmospheric moisture. The reaction thus starts at the surface and proceeds to the core of the joint. The curing speed depends on the relative humidity and the temperature (see diagram 1 below). Heating above 50°C to speed-up the vulcanization is not advisable as it may lead to bubble formation. At low temperatures the water content of the air is lower and the curing reaction proceeds more slowly.

 ~15 minutes.
 

~180 minutes.

Surfaces must be clean, dry and free from oil, grease and dust, loose and friable materials. Advice on specific applications and surface pretreatment methods is available from the Technical Service Department.

Uncured SikaSeal®-305 Glass and Weather Seal may be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material
can only be removed mechanically. Hands and exposed skin should be washed immediately using Sika®Handclean Towel or a suitable industrial hand cleaner and water, do not use solvents.