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 5935-01-325-8859
NSN 5920-01-158-4517
NSN 5996-01-189-9480
NSN 6130-01-117-1889
NSN 5960-01-274-3900
NSN 6220-01-082-3982
NSN 2925-00-957-7329
NSN 5960-01-146-0289
NSN 5855-00-427-7848
NSN 5915-01-274-1411
NSN 2925-00-231-8041
NSN 5999-01-377-5844