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 5925-01-411-6028
NSN 6110-01-509-9041
NSN 6645-00-372-2618
NSN 5999-01-363-8135
NSN 5895-01-235-1274
NSN 4140-01-464-0711
NSN 6650-01-441-3142
NSN 6220-00-927-6272
NSN 6685-01-157-9340
NSN 6220-01-361-3483
NSN 6610-00-582-1107
NSN 5950-00-828-5334