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 5895-01-237-8957
NSN 4140-01-573-7272
NSN 5935-01-147-4937
NSN 5905-00-420-5711
NSN 5895-01-256-2071
NSN 6220-00-062-7029
NSN 4140-01-426-8428
NSN 6150-00-175-5390
NSN 5935-01-180-4203
NSN 5910-00-707-4900
NSN 5950-01-428-7303
NSN 5835-00-498-8189