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 5935-01-181-5678
NSN 5990-00-960-6310
NSN 6610-01-559-1447
NSN 5990-00-057-0629
NSN 6130-01-227-7074
NSN 6610-01-139-0174
NSN 6620-01-052-2773
NSN 6685-01-280-4731
NSN 6135-01-285-1925
NSN 5975-00-111-6781
NSN 2925-01-445-4095
NSN 5998-00-255-4090