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 4140-00-459-9045
NSN 5925-01-401-5314
NSN 6220-01-334-8306
NSN 5920-01-634-0250
NSN 5998-00-097-9187
NSN 6145-01-045-6713
NSN 5895-01-403-2793
NSN 6320-00-025-9910
NSN 5920-00-740-3121
NSN 5990-00-371-6590
NSN 5915-01-654-9378
NSN 6220-01-072-2582