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 5895-01-517-0411
NSN 5975-00-256-1486
NSN 5925-01-342-3502
NSN 5920-01-273-7923
NSN 5950-01-446-6903
NSN 6620-01-582-2046
NSN 5935-00-554-0244
NSN 5945-01-497-6539
NSN 5945-01-442-8081
NSN 7035-00-631-3782
NSN 6240-01-273-3068
NSN 6145-01-090-1086