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 6320-00-139-1090
NSN 6645-00-381-9628
NSN 5855-01-275-5470
NSN 5965-00-391-0562
NSN 6110-00-446-6099
NSN 5835-01-074-1161
NSN 5965-01-039-8557
NSN 6130-01-395-2072
NSN 5975-00-707-6245
NSN 6685-00-388-8821
NSN 6685-01-530-3458
NSN 5999-00-407-2888