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 5895-00-596-8678
NSN 5945-01-378-7499
NSN 6650-01-234-1896
NSN 5945-01-418-3203
NSN 6620-01-466-4436
NSN 5905-01-185-2195
NSN 5960-00-675-3439
NSN 6685-01-603-4559
NSN 6130-00-497-1937
NSN 6650-01-341-8097
NSN 5920-00-880-0911
NSN 6130-01-503-8376