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 6145-01-648-3781
NSN 5920-01-462-2517
NSN 5925-01-538-0960
NSN 5905-01-384-1854
NSN 5855-00-198-3197
NSN 6240-01-063-7685
NSN 5835-01-442-6482
NSN 5965-00-196-7320
NSN 5915-01-424-6958
NSN 5996-01-391-8033
NSN 6110-01-438-2604
NSN 4140-01-225-1412