For more information, please download the TDS available in PDF format below.BLUESIL ESA 7258 A may be stored for up to 12 months from its date of manufacturing.Please consult the Safety Data Sheet of this product.


​BLUESIL™ ESA 7258 is a two-component, heat curing, liquid silicone elastomer that crosslinks by a polyaddition reaction. This product is well suited for applications that require a heat curable silicone elastomer for potting of electronics. BLUESIL™ ESA 7258 cures without regard to the thickness of the material, and cure rate is controlled by the temperature of cure. For many applications, the use of a primer may be required if adhesion is necessary.

Protection;UV resistant

2 Part RTV

• Power supplies                                                • Sensors

• Transformers                                                   • High Voltage Modulators

• Electrical controls                                            • Connectors

• High voltage resistor packs                             • Relays

• Amplifiers                                                         • Connectors

• Electronics general potting material

North America




Viscosity1350PairedCompISO 2555cP




Viscosity1150PairedCompISO 2555cP






hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1hardness_cd523e03-72a3-4261-93f9-36f7bbeeafb1Hardness67PairedMixASTM D 2240sh.A
specific-gravity_108e6684-e7c4-4e2b-a615-631b494320d3specific-gravity_108e6684-e7c4-4e2b-a615-631b494320d3Specific Gravity1.37PairedMixASTM D 792





BLUESIL ESA 7258 BBLUESIL ESA 7258 B/our_offer/Product/90061014/90061012/BLUESIL-ESA-7258-B