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 6240-01-428-9410
NSN 6610-01-053-0061
NSN 5910-01-367-2738
NSN 6145-00-500-5679
NSN 6645-01-034-0469
NSN 5895-00-417-5529
NSN 6610-01-546-9693
NSN 5975-00-526-4701
NSN 6150-01-548-5589
NSN 5960-00-227-0243
NSN 5915-00-747-9679
NSN 6130-01-623-1748