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 4140-00-249-5603
NSN 6620-01-068-6224
NSN 6685-01-270-1526
NSN 6650-01-193-8983
NSN 6685-01-542-5365
NSN 5960-00-824-7550
NSN 5965-00-328-6884
NSN 6685-01-025-1587
NSN 4140-01-595-0718
NSN 5925-01-017-5772
NSN 6685-01-033-7838
NSN 5999-01-508-6817