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 5895-00-150-0374
NSN 7035-01-271-1643
NSN 6620-01-091-9697
NSN 6320-01-039-5891
NSN 5925-01-361-1775
NSN 6320-01-406-6098
NSN 4140-01-287-5429
NSN 5915-00-109-2903
NSN 6220-01-434-0160
NSN 5945-00-136-6349
NSN 5996-01-034-7616
NSN 5985-01-300-0481