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 6220-00-959-5698
NSN 5935-00-669-2717
NSN 5999-00-669-8928
NSN 6110-01-172-7858
NSN 6620-01-265-2342
NSN 5895-00-620-7209
NSN 6220-01-300-4784
NSN 6240-00-017-9006
NSN 5855-01-221-4076
NSN 6105-00-969-4644
NSN 6320-00-331-7138
NSN 5985-01-496-2089