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 6240-01-008-5267
NSN 6650-00-759-8905
NSN 2925-00-734-0516
NSN 6145-01-189-7622
NSN 6610-01-290-2627
NSN 5965-00-841-9195
NSN 6685-01-582-5821
NSN 6320-00-456-0836
NSN 5895-01-352-8774
NSN 5998-01-634-0604
NSN 6620-00-170-5296
NSN 6240-00-314-8042