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 6620-01-523-7818
NSN 5925-00-912-6493
NSN 6610-00-963-7591
NSN 5915-01-467-4468
NSN 6145-01-117-2458
NSN 5915-00-833-9025
NSN 6645-01-451-1295
NSN 5999-01-045-7414
NSN 5965-01-597-5895
NSN 6320-01-425-1417
NSN 6645-01-415-2296
NSN 6685-01-560-0159