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 2925-01-061-4012
NSN 5985-01-291-1579
NSN 5965-01-316-9859
NSN 5975-00-370-9388
NSN 5950-00-107-7321
NSN 2925-01-463-8856
NSN 6685-01-055-7384
NSN 2925-01-597-7531
NSN 6610-01-026-1701
NSN 6610-01-066-2970
NSN 5975-01-424-0314
NSN 6320-01-512-2031