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 5895-00-903-3458
NSN 6610-00-057-3601
NSN 5920-00-809-7802
NSN 6220-00-581-3858
NSN 5915-00-688-7158
NSN 5975-01-287-5533
NSN 2925-01-519-3221
NSN 5950-00-088-5446
NSN 5930-01-126-5823
NSN 6685-01-157-9199
NSN 5965-00-823-8623
NSN 6220-01-401-5337