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 6650-00-074-2445
NSN 5999-01-323-7053
NSN 5905-01-137-8141
NSN 5965-01-029-5222
NSN 6650-01-179-1842
NSN 5990-00-534-9798
NSN 6240-01-398-1891
NSN 5990-01-217-4590
NSN 6110-01-280-9296
NSN 2925-00-468-5273
NSN 4140-00-869-1435
NSN 6685-01-519-2856