Metal static seal and assembly comprising such a seal

Claim 1

A generally round static seal made of a material selected from the group consisting of metal and metal alloys, presenting a unitary load with the limit of remanent elongation Re at least equal to about 60 h bar, coated with a thin layer of coating for the assembly of the seal without the interposition of a washer, having a longitudinal axis, and comprising an annular-part-forming slightly flexible semi-rigid bead and first and second wings connected laterally to the bead and extending transversely therefrom with respect to the axis of the seal, the seal presenting in axial half-section the form of a V lying on its side, the bead having two oppositely disposed planar lateral surfaces perpendicular to the axis of the seal, each wing having an outer tapered surface slightly inclined to its respective planar lateral surface of the bead and connected thereto in a gradual and regular manner to form a concave surface with a large radius of curvature, the wings and bead having an elasticity such that when the wings are flexed said bead flexes displacing said planar lateral surfaces, said wings outer tapered surfaces provide with the displaced planar lateral surfaces of the bead two sealing regions, the flexural capabilities of the wings being determined exclusively by the characteristics of the seal and remaining independent from outer connecting pieces cooperating with the seal.