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 5835-00-554-0399
NSN 5910-01-019-6867
NSN 4140-00-142-2491
NSN 5965-00-878-9614
NSN 6320-00-646-3311
NSN 6650-00-781-7253
NSN 4140-01-365-8215
NSN 6685-00-435-9487
NSN 6610-00-066-9353
NSN 5945-01-464-3531
NSN 5895-00-676-9453
NSN 6145-00-296-0085