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 4140-00-084-7343
NSN 6135-01-603-8367
NSN 6320-01-567-9792
NSN 4140-01-133-4562
NSN 5998-01-377-5288
NSN 6610-01-537-1685
NSN 5960-00-688-7510
NSN 6320-01-246-4390
NSN 5985-00-328-6087
NSN 5945-01-542-3186
NSN 5935-00-766-1120
NSN 6610-00-106-7980