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 6645-01-545-5536
NSN 6645-01-370-5264
NSN 5895-01-027-7634
NSN 5835-01-642-4705
NSN 5998-01-547-3208
NSN 5945-01-519-4998
NSN 6685-01-606-1660
NSN 5996-01-223-3506
NSN 2925-00-111-4097
NSN 5999-00-968-6111
NSN 5910-00-353-0915
NSN 4140-01-425-6441