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 5960-00-525-1898
NSN 6610-00-111-3648
NSN 5950-00-932-4260
NSN 5920-01-246-5678
NSN 4140-01-580-0277
NSN 6320-01-050-1290
NSN 6145-01-323-3971
NSN 6130-00-465-1350
NSN 5999-00-892-8728
NSN 5835-01-412-0344
NSN 5925-01-503-0394
NSN 6150-01-550-5556