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 6150-01-491-8420
NSN 5905-01-648-6667
NSN 6320-01-501-7935
NSN 6145-01-401-3713
NSN 4140-00-707-5963
NSN 6110-01-367-6526
NSN 6130-00-205-1714
NSN 5930-01-123-6276
NSN 5895-01-569-3281
NSN 5920-01-291-0397
NSN 5950-01-089-6121
NSN 5935-00-929-6123