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 6220-01-272-3177
NSN 2925-01-534-7314
NSN 6650-01-055-7512
NSN 5999-01-171-3783
NSN 6105-01-551-5492
NSN 5960-01-053-4358
NSN 6620-01-329-7510
NSN 2925-01-513-7347
NSN 5975-01-310-8567
NSN 6145-00-269-4271
NSN 5835-01-116-2369
NSN 5905-01-382-6436