Remix each of the 2 components (A and B part) every time before using. Mix Part A and Part B components according to recommended weight ratios.

The two components are thoroughly mixed using an electrical or pneumatic mixer, on a low speed setting so as to limit the inclusion of air in the mixture. A dispensing machine can also be used. The mixing can be made with a dynamic mixing head or a static mixer.

The mixture of the two components should be degassed to remove air bubbles which would reduce the mechanical and dielectric properties. Degassing is generally performed in a vaccum of 30 to 50 mbars for about ten minutes, releasing the vacuum twice in the chamber.

BLUESIL ESA 7252 A&B can be poured on to metals, glass, laminates or moulded articles containing organic resins or silicones, or on all other materials. It is recommended to pour slowly the degassed BLUESIL ESA 7252 A&B mixture at the lowest point of the volume to be filled, to prevent the formation and entrapment of air bubbles. The container should not be filled completely, to allow the BLUESIL ESA 7252 A&B to expand at service temperatures.

At a temperature of 23°C, BLUESIL ESA 7252 A&B cures in approximately 8 hours. Curing can be accelerated by external heat, and the higher the temperature the faster curing will be. For example, at 150°C the product cures in about 5 minutes.

Certain materials that the BLUESIL ESA 7252 A&B may be in contact with when curing could inhibit the reaction. Especially troublesome materials are: sulphur-containing cured natural and synthetic rubber compounds (neoprene, latex, SBR), tin catalyzed silicone rubbers, amine catalyzed epoxies, PVC stabilized with tin salts and some polyurethane elastomers.

An object encapsulated with BLUESIL ESA 7252 A&B can be repaired simply by cutting away the ESA and replacing the missing elastomer with new BLUESIL ESA 7252 A&B, which adheres very strongly to itself with no need for a primer.

BLUESIL ESA 7252 A may be stored at temperatures between -5°C / 23°F and 30°C / 86°F for up to 20 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


BLUESIL ESA 7252 A&B is a two-component silicone elastomer which cures at room temperature by a polyaddition reaction. The curing can be accelerated by heating.


BLUESIL ESA 7252 A&B is supplied in the form of a viscous liquid which is transformed, after mixing parts A and B and then curing, into a strong, elastic material.

Fire Protection;Protection;Thermal conductive

2 Part RTV

  • Outstanding flame resistance.
  • Good thermal conductivity: dissipation of calories (encapsulation).
  • Low viscosity (easily refilled).
  • Fast curing product.
  • Non corrosive.
  • Potting: protection of electrical component, connection box.
  • Encapsulating: connectors, captors, sensors in on board electronic.
  • Thermal and fire protection in aerospace.

Asia Pacific;Europe Middle East Africa;Central and South America;North America




Viscosity3500PairedCompNF T 76102mPa.s




Viscosity3000PairedCompNF T 76102mPa.s






hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1Hardness48PairedMixASTM D 2240sh.A
pot-life_0d649a54-7503-4c7c-a047-9d0c4b3e9f6apot-life_0d649a54-7503-4c7c-a047-9d0c4b3e9f6aPot life90PairedMixmin
elongation_68a5ddf2-2baf-4e60-ac6f-0a8a18a758b2elongation_68a5ddf2-2baf-4e60-ac6f-0a8a18a758b2Elongation170PairedMixNF ISO 37%





BLUESIL ESA 7252 BBLUESIL ESA 7252 B/our_offer/Product/90054812/90054813/BLUESIL-ESA-7252-B
















Potting For Induction Stirrers For Induction Stirrers









Adhesive Silicones Solutions Silicones Solutions








BLUESIL ESA 7252 QC ABLUESIL ESA 7252 QC A/our_offer/Product/90057612/90057613/BLUESIL-ESA-7252-QC-A