METHOD TO MANUFACTURE SEALING RING TO SEAL MILL SUPPORTS Russian patent published in 2013 - IPC E21B10/25 F16J15/16 

FIELD: mining.

SUBSTANCE: method to manufacture a sealing ring for sealing of drilling bit mill supports includes inspection of quality of components in a formula, preparation of their mass for a launched batch of a rubber mix made of rubber, technical carbon, activators, accelerators or moderators of preliminary vulcanisation, age resistors, frost resistance boosters, rolling, extrusion, vulcanisation under pressure and during heating, removal of burr. The sealing ring is assembled from two components made in accordance with a different technology and having various physical properties, onto their end contact surfaces the adhesive substance is applied, the joined components are placed into a cylindrical sleeve with an inner diameter that is equal to the diameter of the sealed inner surface of the mill, where under the load of the sleeve cover and under heating they are maintained until complete drying of the adhesive substance.

EFFECT: increased reliability and durability of operation of a seal and a drilling bit in general.

4 dwg