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 5965-01-395-6368
NSN 5990-00-145-1187
NSN 6320-01-532-7491
NSN 5965-01-143-9577
NSN 5985-01-422-2552
NSN 5915-00-940-7439
NSN 6320-01-592-6248
NSN 5998-01-391-6832
NSN 5905-00-735-4333
NSN 6240-01-200-9634
NSN 5985-01-348-8000
NSN 6150-01-206-1074