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 6645-00-023-8386
NSN 5920-01-034-2473
NSN 5960-01-429-5897
NSN 6150-00-411-4064
NSN 6240-01-100-4158
NSN 5920-01-525-0874
NSN 6145-00-126-1606
NSN 5930-00-263-5217
NSN 6620-01-061-3497
NSN 5950-01-217-9859
NSN 5998-00-853-7566
NSN 6145-01-633-6571