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 5895-00-779-0859
NSN 5930-01-501-0434
NSN 5930-01-521-2600
NSN 6610-01-199-7371
NSN 5920-00-413-3341
NSN 5990-01-084-0807
NSN 5925-01-125-5795
NSN 5920-00-269-4060
NSN 6240-00-573-7514
NSN 5920-01-037-1505
NSN 5910-00-249-3637
NSN 5835-01-198-6814