Abstract A seal adapted to be mounted between inner and outer members which are rotatable relative to one another, one of said members having opposing sealing surfaces, comprising an annular element having inner and outer portions connected by a flexible membrane, one of said portions defining a locking means for securing the annular element to the other of said members, the other portion of said annular element remote from said one portion defining a sealing element adapted to be compressed axially between opposing sealing surfaces of said one member and comprising two annular sliding sealing faces disposed on opposite sides of said membrane for sliding sealing contact with said sealing surfaces, said membrane being flexible in an axial direction so that the contact pressures of the sliding sealing faces in the axial direction adjust to substantially the same value as each other, at least one of said annular sealing portions comprising an open funnelshaped sealing lip.
A seal adapted to be mounted between inner and outer members which are rotatable relative to one another, one of said members having opposing sealing surfaces, comprising an annular element having inner and outer portions connected by a flexible membrane, one of said portions defining a locking means for securing the annular element to the other of said members, the other portion of said annular element remote from said one portion defining a sealing element adapted to be compressed axially between opposing sealing surfaces of said one member and comprising two annular sliding sealing faces disposed on opposite sides of said membrane for sliding sealing contact with said sealing surfaces, said membrane being flexible in an axial direction so that the contact pressures of the sliding sealing faces in the axial direction adjust to substantially the same value as each other, at least one of said annular sealing portions comprising a frustoconical sealing lip inclined toward the other of said members.
Claim 2
Dependent Claim
161 words
A seal adapted to be mounted between inner and outer members which are rotatable relative to one another, one of said members having opposing sealing surfaces, comprising an annular element having inner and outer portions connected by a flexible membrane, one of said portions defining a locking means for securing the annular element to the other of said members, the other portion of said annular element remote from said one portion defining a sealing element adapted to be compressed axially between opposing sealing surfaces of said one member and comprising two annular sliding sealing faces disposed on opposite sides of said membrane for sliding sealing contact with said sealing surfaces, said membrane being flexible in an axial direction so that the contact pressures of the sliding sealing faces in the axial direction adjust to substantially the same value as each other, at least one of said annular sealing portions comprising a frustoconical sealing lip inclined toward the other of said members.
Claim 3
Dependent Claim
22 words
A seal as claimed in claim 6 wherein said sealing lips diverge upwardly and outwardly in opposite directions relative to said membrane.
Claim 4
Dependent Claim
17 words
A seal as claimed in claim 1 wherein said membrane is in the form of a bellows.
Claim 5
Dependent Claim
20 words
A seal as claimed in claim 1 wherein one of said annular sealing portions comprises a substantially cylindrical sealing lip.
Claim 6
Dependent Claim
38 words
A seal as claimed in claim 1 wherein said sealing element is provided with a cylindrical surface adapted to contact an outer cylindrical surface of said inner member in order to position the seal in the radial direction.
Claim 7
Dependent Claim
16 words
A seal as claimed in claim 1 wherein the sealing faces are positioned at different diameters.