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 4140-01-182-4653
NSN 5835-00-170-5238
NSN 2925-00-157-1602
NSN 5965-01-466-9932
NSN 6610-00-350-1091
NSN 5985-01-446-5950
NSN 6220-01-252-8398
NSN 2925-00-802-9387
NSN 5935-01-561-8669
NSN 5965-01-625-4776
NSN 2925-01-155-2994
NSN 5835-00-984-1233