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 5999-01-128-1414
NSN 2925-01-556-0333
NSN 5935-01-222-4220
NSN 6105-00-399-1352
NSN 7035-00-919-3381
NSN 6320-00-036-3688
NSN 2925-00-677-5641
NSN 5996-00-113-2243
NSN 5996-01-312-8497
NSN 6685-01-341-0645
NSN 5905-00-522-1825
NSN 5910-00-679-9556