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 6110-01-384-0570
NSN 5996-00-100-4932
NSN 5925-01-118-7438
NSN 6645-01-420-6804
NSN 6240-00-201-1200
NSN 5999-00-222-7428
NSN 5835-01-435-4139
NSN 6130-00-596-9565
NSN 6105-01-310-9799
NSN 5960-00-624-0133
NSN 5975-01-171-5990
NSN 6650-01-298-4138