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 5910-01-283-3041
NSN 5950-00-470-9241
NSN 5835-00-864-0694
NSN 6110-01-441-2625
NSN 6110-01-207-4543
NSN 6320-01-544-6447
NSN 5935-00-774-6523
NSN 6645-00-107-8190
NSN 5920-01-204-6419
NSN 6620-00-470-3219
NSN 5985-01-192-6987
NSN 5945-01-564-2721