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 5835-00-170-5238
NSN 6650-01-528-6563
NSN 5925-00-261-8166
NSN 5945-01-064-5623
NSN 6650-01-233-0016
NSN 5960-01-004-3031
NSN 6620-00-417-6285
NSN 5975-01-484-5991
NSN 5935-01-216-7907
NSN 6645-01-023-8020
NSN 5920-01-232-8497
NSN 6620-01-202-5763