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 5975-01-657-2702
NSN 5985-01-207-3400
NSN 5935-01-126-9150
NSN 5990-01-407-1474
NSN 5965-01-433-9864
NSN 6110-01-174-0086
NSN 6135-01-390-7364
NSN 5998-01-503-9153
NSN 7035-01-458-3532
NSN 5930-00-575-2839
NSN 6110-00-007-6453
NSN 6145-01-192-6416