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 5998-00-202-8590
NSN 7035-00-981-7216
NSN 5920-01-012-9926
NSN 6105-01-479-8988
NSN 6130-01-116-6432
NSN 6685-01-633-5380
NSN 5975-01-248-2723
NSN 6150-01-440-1572
NSN 6645-01-546-3212
NSN 5965-01-520-3847
NSN 5945-01-042-7389
NSN 5950-01-373-4752