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 6135-01-364-0667
NSN 6130-01-235-2487
NSN 6110-00-140-8769
NSN 6135-01-069-2482
NSN 6145-01-104-6029
NSN 5835-00-033-0294
NSN 2925-01-131-4531
NSN 5998-01-432-2492
NSN 6145-01-382-7542
NSN 7035-00-193-2269
NSN 5935-01-382-4981
NSN 5835-01-553-4894