Master Bond X21Med is a single-component elastomeric compound that passes ISO 10993-5 tests for cytotoxicity.

Developed for priming and bonding polyolefinic substrates. Can be used as adhesive or primer. Has low viscosity of less than 250cps and cures at ambient temperatures or more rapidly with heat. As a primer, it is applied in a thin layer to the surface; solvent is allowed to evaporate. When used as an adhesive, it is applied to both substrates and then mated. Max area of bonding effectiveness is about 1 sq. in. Once cured, this clear to light amber colored product is tough and not rigid. Is reliable electrical insulator; volume resistivity exceeds 1014 ohm-cm. Is serviceable from -60° to +200°F. Comes in pints, quarts, gallons and 5-gal. containers.

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