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 5925-01-481-1711
NSN 6620-01-209-0260
NSN 6645-00-879-9941
NSN 6220-01-032-5269
NSN 6145-00-345-2565
NSN 6145-01-452-0687
NSN 5990-01-516-9665
NSN 5920-01-095-2355
NSN 6130-00-890-0553
NSN 6620-00-824-4609
NSN 5915-01-197-1857
NSN 6620-01-231-4208