SILCOLEASE PSA 401  A1 is supplied at high solid content and high viscosity. It can be used as such or be diluted by addition of an appropriate aromatic solvent such as toluene or xylene.

To achieve optimum properties, the addition of an organic catalyst is recommended (benzoyl peroxide* - premixed to 50% - added at a concentration of 0,5 to 3% relative to SILCOLEASE PSA 401  A1) The adhesive properties depend on the curing conditions used; they are generally of around a few minutes at temperatures of 130 - 200°C .

SILCOLEASE PSA 401 A1 may be stored at temperatures between -20°C / -4°F and 30°C / 86°F for up to 12 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


​SILCOLEASE PSA 401 A1 is a silicone pressure sensitive adhesive (PSA) used in coating films and fabrics for the production of high performance pressure sensitive tapes. It's a compounded solution of polydimethyl siloxane gum and resin diluted in toluene

Adhesion;Coating;Heat Protection;High Temperature Protection


  • Excellent cohesive strength at room and high temperature

  • Improved loop tack adhesion with good peel adhesion

  • Good resistance to humidity and natural ageing

  • High viscosity for coating on woven surfaces

  • Increased productivity (quick drying)

  • Plasma / flame spray masking tapes

  • High-performance electrical tapes

  • Applications where high shear resistance is required

Asia Pacific;Central and South America;North America