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 6130-01-067-8849
NSN 6645-01-519-6324
NSN 5960-00-087-0713
NSN 6620-00-109-5607
NSN 6145-00-257-6820
NSN 6220-01-075-2438
NSN 5835-01-285-8650
NSN 5855-01-258-7557
NSN 6610-01-621-9504
NSN 5965-00-351-7460
NSN 5945-01-487-4127
NSN 7035-01-555-7239