Datasheet: Chem-Calk® 300 One-Component; Butyl Rubber

Chem-Calk® 300 is a one-component architectural grade butyl rubber sealant.

Chem-Calk® 300 is designed for caulking and sealing joints where little or no joint movement can be expected such as in perimeter joints of window frames and door jambs, bedding thresholds, secondary seals in glazing, and where a seal is required against neoprene gaskets.

Chem-Calk® 300 butyl rubber sealant may be factory-applied to seal shop finished products or field-applied to seal erected building components in both new and remedial applications.

Some substrates have variable surface characteristics depending on their source. The unpredictability of such surface characteristics make it desirable to have a Pretested Adhesion to Substrates Test (PATS Program) on appropriate samples.