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Simson ISR 70 03

Simson ISR 70-03 – High Performance Multi-Functional Sealant

Bostik Simson ISR 70-03 is a high-performance multifunctional product ideal for sealing and bonding for multiple industrial applications. Its high strength combined with superior adhesion properties makes it suitable for a wide range of materials and applications.

Simson ISR 70-03 – High Performance Multi-Functional Sealant

Bostik Simson ISR 70-03 is an ideal multifunctional sealing and bonding product suitable for a wide range of materials and applications.

Description Simson ISR 70-03

This product is a medium-high modulus SMP sealant suitable for the technical sealing of multiple materials (painted and raw metals, composites, etc.). On the other hand, it is ideal for making elastic joints that require high tensile strength.


Below we present the main features of Simson ISR 70-03:

  • Gray
  • Basis: MS Polymer
  • Hardness: 55 Shore A
  • Elongation at break: 250
  • Temperature resistance: -40 °C to +120 °C

Advantages Simson ISR 70-03

This Bostik product has the following advantages:

  • Good adhesion on multiple supports without the need for a primer.
  • Elastic bonding.
  • Solvent-free.
  • Applicable on wet supports.
  • Paintable after having formed superficial skin.

product applications

It has a good balance between its adhesive and sealing properties. It is also suitable for making elastic joints that require high tensile strength. Here are some examples:

  • Elastic joints and seals in bus, caravan, train and truck bodies.
  • Bonding and sealing of covers.
  • Bonding of aluminium or polyester profiles and corners on trailers
  • Bonding of floor systems.
  • Sealing of welding lines.

How to apply it?

Below are some indications for the use of the product:

  • It has good adhesion, without primer, on clean and degreased surfaces of aluminium, steel, galvanized, zinc, copper, bronze, painted metal, glass, PVC, polyester, wood, etc.
  • It is easily extruded using manual or pneumatic guns, at temperatures between +5ºC and +35ºC. In sealing operations, the mastic bead can be smoothed within 10 minutes after application (20ºC/50% RH) using a spatula occasionally moistened with soapy water.
  • In bonding applications, the substrates must be assembled within 15 minutes after application (at 20ºC/50% RH), with a thickness of 2 mm mastic being recommended.
  • It also has good adhesion without the need for a primer on concrete, stone, fibre cement, wood, glass, iron, aluminium, zinc, PVC, ABS, etc.

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