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 5895-00-400-3076
NSN 6685-01-621-4471
NSN 6685-00-690-8626
NSN 6650-01-044-9860
NSN 4140-00-103-0065
NSN 6610-00-421-8919
NSN 5960-01-429-5897
NSN 6130-01-521-7145
NSN 5975-01-426-3279
NSN 6620-00-038-5343
NSN 5915-00-578-8145
NSN 6620-01-625-2855