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 6145-01-072-1711
NSN 6135-00-347-0595
NSN 5945-01-320-8251
NSN 5915-01-030-4721
NSN 6610-00-081-2365
NSN 5910-00-414-3416
NSN 5990-01-438-8228
NSN 5905-01-575-5366
NSN 5895-00-233-7309
NSN 5985-01-317-2916
NSN 6645-01-574-5188
NSN 6150-00-617-1989