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November 18, 2015 - Automotive General Transportation

70-03A: SMP Featured Product Series

Bostik has published several blogs on Silyl Modified Polymer (SMP) technology. We have already looked at STR220A, STR350A and STR360A SKF, but now let’s look at another product in particular:

70-03A, High Quality Adhesive and Sealant

What is it?

Bostik’s 70-03A is a quality adhesive and sealant based on SMP and is designed for making elastic construction joints that require high strength.

Why is it beneficial?

This product has high green strength with very good workability and is able to adhere on many substrates without the use of a primer. Additionally, 70-03A can be painted with most industrial paints 10 minutes after application. Its versatility allows it to be a solution for several applications including buses, caravans, trains, trucks, sunroof systems, bonding polyester parts on metal frames and sealing welded seams.

Screen Shot 2015-11-18 at 1.13.37 PM

Key Features

  • Low residual tack
  • Primerless adhesion
  • Durable performance

How to Use It:

70-03A easily can be extruded with a hand or air pressure gun at temperatures between 45°F to 100°F. In sealing applications, the product should be tooled or finished within 10 minutes with a spatula or putty knife, occasionally moistened with a soap solution. In bonding applications, the substrates have to be assembled within 15 minutes after applying the product.

Special Recommendations

Avoid soap solution penetrating between joint sides and sealant, which will create loss of adhesion. In general, an adhesive thickness of 2 mm is recommended.

For more detailed information about 70-03A and to request the Technical Data Sheet, please email ibumarketing@bostik-us.com, or call 800-7-BOSTIK.

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