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 5910-01-401-5279
NSN 6320-01-600-5808
NSN 5925-01-645-4909
NSN 6130-01-528-8775
NSN 6685-01-319-0999
NSN 6110-01-356-4735
NSN 5895-00-712-8422
NSN 6685-01-155-9389
NSN 7035-01-143-3573
NSN 6150-01-535-6663
NSN 6610-01-533-7458
NSN 6610-00-583-1084