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 6620-01-371-1655
NSN 6650-01-456-5188
NSN 6110-01-277-0602
NSN 6320-01-379-1182
NSN 6620-01-145-1278
NSN 5920-00-917-6824
NSN 6320-00-586-5641
NSN 5905-00-353-1659
NSN 5925-00-100-0102
NSN 6620-01-550-2804
NSN 6685-01-120-5280
NSN 6645-01-513-0117