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 5835-00-958-6231
NSN 5998-00-464-1199
NSN 5985-01-394-3850
NSN 5965-01-418-5535
NSN 5895-01-108-9326
NSN 4140-00-168-1920
NSN 5895-00-432-2413
NSN 2925-01-348-8306
NSN 6105-01-082-3101
NSN 5950-00-378-9959
NSN 6220-01-353-7777
NSN 5945-01-178-9024