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Momentive RTV157 Adhesive Sealant High Strength

Click Here To Download Detailed RTV157 Technical Data Sheet

Momentive RTV157 Description

RTV 157 is a one-component, ready-to-use, high strength silicone rubber adhesive sealant. It cures to a tough resilient silicone rubber on exposure to atmospheric moisture at room temperature. RTV159 sealant also provides high temperature performance. Both of these products release acetic acid vapours as a by-product of cure.

RTV 157  sealant is a paste consistency product which can be applied to horizontal, vertical and overhead surfaces in applications requiring high strength and temperature performance. Since this adhesive sealant utilizes a moisture cure system, it must not be used in thicknesses of greater than 6mm (1/4 in.). Where section depths exceed 6mm (1/4 in.), Momentive Performance Materials one-component, addition cure or two-component silicone rubber compounds are suggested.

These sealants were not designed for and should not be used for applications intended for permanent implantation into the human body.

Momentive RTV157 Available Online

Key Features and Benefits of RTV157

  • High strength
  • Low temperature flexibility
  • One-component
  • Room temperature cure
  • General primerless adhesion
  • Excellent electrical insulation properties
  • Excellent weatherability, ozone, and chemical resistance

RTV157 Typical Physical Properties

  • Consistency : Paste
  • Colour : Grey
  • Application rate (g/min) : 155
  • Specific Gravity : 1.09
  • Tack free time : 45 minutes

RTV157 Mechanical Cured Properties

  • Tensile Strength, kg/cm2 (lb/in2 ) : 68.6 (975)
  • Elongation % : 825
  • Hardness Shore A : 28
  • Tear Strength, kg/cm (lb/in) : 68.6(975)
  • Shear Strength, kg/cm2 (lb/in2)(2) : 16.1 (90)
  • Peel Strength, kg/cm (lb/in)(3) : 10.7 (60)

RTV157 Electrical Cured Properties

  • Dielectric Strength, kv/mm (v/mil) : 20.7 (525)
  • Dielectric Constant @ 60 Hz : 2.9
  • Dissipation Factor @ 60 Hz : 0.0009
  • Volume Resistivity, ohm-cm : 7.5×1014

RTV 157 Important Information

(1) Cure time 3 days at 25°C (77°F) / 50% relative humidity.
(2) Cured 7 days at 25°C (77°F) and 50% relative humidity. Substrate was alclad aluminum
(3) Information is provided for customer convenience only. These properties are not tested on a routine basis.

  • RTV 157 sealant was not designed for and should not be used for applications intended for permanent implantation into the human body.

For more information on the complete range of Silicone adhesives, encapsulants and potting compounds available from Silicone Solutions click here 

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