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 6150-01-483-4515
NSN 6620-00-495-7438
NSN 5965-01-207-0991
NSN 6320-01-453-5152
NSN 5996-01-575-1501
NSN 6150-01-617-9223
NSN 5945-01-440-2065
NSN 5905-01-476-8224
NSN 4140-01-101-2422
NSN 6240-00-999-4421
NSN 5990-01-175-2597
NSN 5960-00-675-9373