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 6645-01-244-4881
NSN 5920-01-373-4629
NSN 6645-01-212-9474
NSN 5998-01-335-0558
NSN 6645-01-096-9719
NSN 5965-00-677-1461
NSN 6650-01-462-5879
NSN 5990-00-406-1842
NSN 5935-01-085-4977
NSN 5950-01-524-9166
NSN 5985-00-136-9711
NSN 6130-00-300-8988