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 5925-01-019-1983
NSN 6610-01-374-0569
NSN 5895-01-648-4792
NSN 5905-00-104-8096
NSN 5920-00-088-4674
NSN 5930-00-705-7187
NSN 5999-00-092-0512
NSN 6150-01-234-2079
NSN 5930-00-923-1869
NSN 6610-00-015-7694
NSN 5895-00-516-9357
NSN 5975-01-462-5846