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 6650-01-144-8436
NSN 5950-00-610-0553
NSN 6320-01-384-3850
NSN 5925-00-914-3636
NSN 5960-00-231-3767
NSN 6130-01-351-5436
NSN 5915-01-357-8484
NSN 5895-00-447-0550
NSN 5945-00-156-7256
NSN 5960-00-269-4762
NSN 5905-01-512-1354
NSN 6645-00-339-0318