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 5990-01-116-2181
NSN 5930-00-180-1321
NSN 6130-01-323-4425
NSN 6110-00-914-2420
NSN 5895-01-557-9026
NSN 5920-01-020-7659
NSN 6610-00-277-7206
NSN 5925-01-480-2119
NSN 6620-01-383-7519
NSN 5998-01-252-8803
NSN 5895-01-575-1286
NSN 6220-00-812-0515