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 6320-01-214-8621
NSN 5998-01-013-9293
NSN 6685-01-423-8076
NSN 6620-01-524-0583
NSN 6240-01-459-9778
NSN 6650-00-442-0567
NSN 5945-00-597-4599
NSN 5895-01-302-7047
NSN 5960-00-773-2406
NSN 2925-01-422-9284
NSN 6135-01-111-1495
NSN 6220-00-160-1298