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 6105-01-225-4099
NSN 6320-00-701-0437
NSN 5935-01-529-4569
NSN 5910-01-604-9958
NSN 6130-00-701-0029
NSN 5965-01-267-8536
NSN 5945-01-273-0770
NSN 4140-01-488-3969
NSN 6220-01-612-5894
NSN 5960-01-020-6316
NSN 6135-00-008-5345
NSN 5950-00-152-5011