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 5975-00-273-0790
NSN 5965-01-432-1943
NSN 6110-01-090-0417
NSN 5965-00-670-2931
NSN 6240-00-658-3207
NSN 5930-01-159-8772
NSN 5990-01-207-6524
NSN 7035-00-059-7970
NSN 5996-01-554-7644
NSN 6220-01-374-6667
NSN 6320-01-552-8721
NSN 6240-01-152-2662