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 5925-01-302-2720
NSN 5996-01-023-7896
NSN 5950-00-910-1748
NSN 5998-01-256-7071
NSN 5905-01-412-5152
NSN 5925-01-370-6972
NSN 6650-00-181-8376
NSN 5965-01-371-8031
NSN 5965-01-530-2673
NSN 6110-01-010-4551
NSN 6320-00-681-1324
NSN 5935-00-111-2417