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 5990-01-284-3187
NSN 5905-00-214-7303
NSN 5996-01-350-3345
NSN 4140-01-411-6666
NSN 6220-01-004-4318
NSN 6110-01-477-8302
NSN 4140-01-125-5187
NSN 6130-01-469-6139
NSN 6610-01-463-5368
NSN 5996-01-096-8721
NSN 5910-01-386-7087
NSN 6685-01-102-2330