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 5910-01-381-1480
NSN 5975-01-262-9535
NSN 5895-00-376-5074
NSN 6220-00-483-4044
NSN 6135-01-176-2206
NSN 5930-01-471-0862
NSN 5935-00-035-4559
NSN 5975-00-203-8416
NSN 6620-01-030-6495
NSN 5855-01-169-4275
NSN 5835-00-409-4965
NSN 6150-01-171-0030