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 5950-01-461-8658
NSN 5975-01-101-7250
NSN 6145-00-462-2364
NSN 6130-01-462-5428
NSN 6150-00-950-3217
NSN 5996-00-104-8293
NSN 6320-01-607-0347
NSN 5965-01-559-1898
NSN 5925-01-071-6671
NSN 2925-01-381-5307
NSN 5975-00-111-3208
NSN 5945-01-384-7514