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 6240-01-420-9255
NSN 4140-01-567-8527
NSN 6645-01-196-6277
NSN 6110-01-633-9660
NSN 6645-00-551-8291
NSN 5945-00-348-9242
NSN 6130-00-155-5873
NSN 5999-01-377-4984
NSN 5925-01-031-0663
NSN 6650-00-754-2276
NSN 2925-01-614-0087
NSN 5915-01-533-6267