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 6645-01-611-9391
NSN 6240-00-357-7976
NSN 5996-01-013-0432
NSN 6650-00-668-5703
NSN 6685-00-321-9732
NSN 6110-01-633-9660
NSN 5920-01-021-6865
NSN 5990-00-170-4239
NSN 5965-00-265-7861
NSN 6220-00-120-1249
NSN 6610-01-446-7635
NSN 7035-01-163-3667