Method for manufacturing a sealing ring

Details Method for manufacturing a sealing ring Method for manufacturing a sealing ring

1987-06-12

1989-08-29

Lorin, Hubert

Plastic and nonmetallic article shaping or treating: processes

Orienting or aligning solid particles in fluent matrix material

264150, 264174, 2642092, 2642093, 2642106, 2642101, 2642098, 264292, 264294, 264299, 264310, 264339, B29C 5700, F16J 1500

Patent

active

048615366

ABSTRACT:
A method for manufacture of a sealing ring with a flanged sealing lip having hydrodynamically acting return transport properties in which a sealing lip is first generated by extrusion of a plastically deformable material through a ring nozzle having rotating inner and outer surfaces which are rotated relative to each other to impart a helical motion to the extruded material; the hydrodynamically acting return transport properties being a microscopically fine pleating of the surface of the extruded hollow cylinder. The extruded cylinder is then solidified and cut to a predetermined length. The cylinder is then widened in the radial direction at its front end by an assembly tool which shapes the cylinder into a trumpet-shaped sealing ring with a flanged sealing lip.

REFERENCES:
patent: 3404203 (1968-10-01), Donald
patent: 4672733 (1987-06-01), Schmitt

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