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 5915-01-395-8688
NSN 2925-00-263-2714
NSN 5920-01-493-3936
NSN 5975-00-288-5877
NSN 6610-01-259-5296
NSN 5935-00-434-8886
NSN 6110-00-851-4854
NSN 6645-01-582-2601
NSN 6320-01-331-6947
NSN 4140-00-396-0307
NSN 5999-00-107-0833
NSN 5975-01-602-8801