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 5985-00-156-4536
NSN 5925-00-350-4589
NSN 5935-01-200-0830
NSN 5905-00-905-4150
NSN 6320-00-116-3658
NSN 6220-01-370-1892
NSN 6620-01-603-6442
NSN 6620-00-229-2728
NSN 2925-00-336-8364
NSN 2925-01-057-6993
NSN 5998-01-103-8253
NSN 6645-01-430-4125