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 5985-00-023-2211
NSN 6610-01-005-9173
NSN 5925-01-324-2317
NSN 6320-01-606-2508
NSN 5930-00-617-8400
NSN 6650-01-540-2150
NSN 5920-00-280-3175
NSN 6645-01-526-0379
NSN 5950-01-413-3226
NSN 5915-01-645-8584
NSN 4140-00-170-5152
NSN 5915-01-314-6407