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 5920-00-785-5471
NSN 5910-01-360-6654
NSN 5965-01-589-0448
NSN 2925-00-211-4761
NSN 5915-00-330-3315
NSN 6620-01-074-9377
NSN 6130-01-188-4574
NSN 6150-00-360-1508
NSN 4140-00-981-8580
NSN 6685-00-451-3274
NSN 6650-01-428-9958
NSN 6620-01-411-5750