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 5985-00-109-7308
NSN 6650-01-353-2281
NSN 5990-01-543-6301
NSN 5960-01-381-2478
NSN 6610-01-043-6229
NSN 5985-01-196-6144
NSN 6685-01-634-0611
NSN 6240-01-515-5760
NSN 6150-01-500-1541
NSN 5915-01-031-0697
NSN 6145-01-389-0140
NSN 6645-01-227-2036