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 6150-01-473-0232
NSN 6130-01-167-6021
NSN 5945-00-389-1400
NSN 5998-01-123-6307
NSN 5905-01-347-1808
NSN 5998-01-425-8863
NSN 5950-01-181-0071
NSN 6650-00-968-5700
NSN 6320-00-646-3311
NSN 5945-00-412-0139
NSN 6645-00-222-0471
NSN 6220-01-158-5956