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 6145-01-460-9225
NSN 6150-01-169-6991
NSN 5965-00-498-8177
NSN 5855-01-361-2362
NSN 5925-01-059-0275
NSN 5990-00-082-3107
NSN 6240-00-232-7065
NSN 5945-01-043-4029
NSN 5998-01-182-2804
NSN 6650-00-484-3616
NSN 6685-01-295-2383
NSN 5910-00-283-9783