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 5895-01-123-8694
NSN 5999-01-320-5070
NSN 5925-00-883-0094
NSN 4140-01-575-9814
NSN 5975-01-415-2869
NSN 4140-00-900-0791
NSN 5935-01-495-3366
NSN 7035-01-355-7284
NSN 5975-00-587-4871
NSN 5930-00-893-6873
NSN 6105-01-258-5884
NSN 5990-00-351-5479