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 5965-01-258-5662
NSN 5925-00-312-4426
NSN 4140-01-123-9149
NSN 6105-00-249-5542
NSN 5835-00-170-5238
NSN 5998-01-498-5269
NSN 5960-00-126-4729
NSN 6645-00-462-4842
NSN 5855-01-471-1509
NSN 6105-01-254-3626
NSN 5945-00-554-9351
NSN 5996-01-175-2200