Abstract: The invention relates to an assembly (1) comprising a first metallic part (2) and a second metallic part (4) assembled together and made from different materials, the first and second parts being provided with a first contact surface and a second contact surface (2a,4a) respectively in contact with each other, at least one of the contact surfaces being provided with a protective coating (12,14) capable of preventing the metallic parts from forming a galvanic couple. According to the invention, at least one protective coating comprises a coat of paint (12a,14a) containing a filler of particles conducting electricity. To be applied to the domain of fluid conveyance systems onboard an aircraft.

Abstract: Organopolysiloxane compositions readily cross-linked into elastomers, e.g., elastomeric seals, and advantageously formulated in either one- or two-component packages, are comprised of (A) a polyhydroxylated polysiloxane, (B) a polyacyloxysilane cross-linking agent and (C) a hardening accelerator therefor, said hardening accelerator being protectively microencapsulated within impermeable outer skin membranes adopted to be chemically or physically disrupted, e.g., by heat, irradiation or mechanical breaking, to permit the release of said accelerator (C) therefrom and consequent curing of the composition.