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 5960-00-273-3260
NSN 6620-01-263-6697
NSN 6320-00-557-3079
NSN 5925-01-203-2084
NSN 5930-01-509-8303
NSN 6320-00-284-1524
NSN 5975-01-199-9927
NSN 6135-01-633-2066
NSN 6650-00-957-9985
NSN 6220-01-530-0725
NSN 5960-01-445-3622
NSN 6240-00-221-0859