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 6130-00-036-6270
NSN 6145-01-158-8408
NSN 6130-00-153-8327
NSN 5925-00-020-7920
NSN 6145-01-062-1598
NSN 5999-01-120-9343
NSN 5920-00-958-7202
NSN 6620-01-030-0525
NSN 6240-01-573-5941
NSN 5945-01-551-2804
NSN 5985-01-131-5219
NSN 6105-00-248-5772