A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5975-01-415-0918
NSN 4140-01-050-4470
NSN 6220-00-079-2943
NSN 5950-01-026-6004
NSN 5950-00-060-3135
NSN 5920-00-308-0778
NSN 5975-01-274-0322
NSN 6320-00-553-8427
NSN 5965-01-159-0921
NSN 6620-01-309-1287
NSN 5999-01-128-1414
NSN 6620-01-114-0841