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 6685-01-391-4402
NSN 6130-00-307-9461
NSN 6135-01-618-2199
NSN 5950-01-311-2523
NSN 5975-01-042-3439
NSN 6320-00-238-9973
NSN 6610-01-167-1771
NSN 5915-01-501-5895
NSN 5895-00-069-4546
NSN 5910-01-308-9531
NSN 6650-01-378-2266
NSN 2925-01-037-5383