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 5990-01-171-3547
NSN 5935-01-353-1204
NSN 5998-01-324-3465
NSN 4140-00-041-4616
NSN 2925-01-187-5480
NSN 6135-00-461-3590
NSN 6645-01-232-4843
NSN 6610-01-222-0582
NSN 5945-00-102-7453
NSN 5895-01-252-2953
NSN 7035-01-049-6776
NSN 6650-00-792-8577