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 5925-01-634-0664
NSN 5925-00-479-8233
NSN 5920-00-054-3381
NSN 6130-01-384-2879
NSN 6145-01-381-2529
NSN 5996-01-547-7386
NSN 5996-01-542-9499
NSN 6150-01-151-1602
NSN 6240-01-007-1199
NSN 5965-01-039-8557
NSN 5996-01-556-1410
NSN 2925-01-444-6676