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 5935-00-053-7807
NSN 5935-00-091-9550
NSN 5920-00-261-9848
NSN 6645-01-115-2171
NSN 5920-01-453-2109
NSN 6135-00-203-9645
NSN 5985-01-171-7598
NSN 5965-01-555-6976
NSN 5855-00-951-6483
NSN 5998-01-571-5917
NSN 6150-01-140-8463
NSN 7035-00-299-7150