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 5930-01-529-8950
NSN 5975-01-197-4683
NSN 5915-00-310-3156
NSN 5990-00-691-2697
NSN 5999-01-603-0911
NSN 2925-00-449-2478
NSN 6220-01-237-6776
NSN 5996-01-628-6588
NSN 6685-00-585-6228
NSN 5999-00-597-5054
NSN 5996-01-139-0303
NSN 5990-01-164-8673