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 6150-01-421-0886
NSN 6110-01-301-9383
NSN 6610-01-609-2803
NSN 6240-00-845-0355
NSN 5999-00-005-5310
NSN 6320-00-725-0754
NSN 5895-00-398-0029
NSN 5960-01-425-1454
NSN 6135-01-350-5845
NSN 5990-01-204-7576
NSN 5835-01-216-5639
NSN 6320-00-456-2092