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 5905-01-541-0346
NSN 5996-01-023-8370
NSN 5905-01-588-4320
NSN 5996-01-162-6613
NSN 4140-01-399-0330
NSN 6620-00-269-5168
NSN 6130-00-880-3980
NSN 7035-01-231-0336
NSN 5920-01-330-5224
NSN 5985-01-006-9919
NSN 6145-01-634-0388
NSN 5925-01-542-9068