Sealing ring for a centrifugal separator

Claim 1

A centrifugal separator comprising a rotor mounted for rotation about an axis, the rotor having a first part provided with an annular groove surrounding said axis, the rotor also having a second part provided with an annular projection surrounding said axis and toward which said groove opens through an annular opening of the groove, said projection having opposite the annular groove an annular abutment surface which is of smaller radial dimension and therefore narrower than said annular opening of the groove, said second rotor part being movable axially toward and away from said first rotor part, and a sealing ring of plastically deformable material located in the groove and having an annular sealing surface engageable by said annular abutment surface upon movement of said second rotor part toward said first rotor part, a portion of said ring closest to said abutment surface having annular bevelled edges at opposite sides of said annular sealing surface, whereby the ring has a cross-section which, at said closest portion, tapers toward said projection, said annular abutment surface having a radial dimension which is at least as large as the radial dimension of said annular sealing surface, whereby said annular abutment surface is at least as wide as said annular sealing surface.