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 5895-01-223-0605
NSN 5996-00-251-9173
NSN 6150-00-155-8511
NSN 6130-01-512-2247
NSN 6110-00-959-7002
NSN 6130-00-296-8697
NSN 6105-00-240-3372
NSN 5925-00-280-2273
NSN 4140-00-820-1173
NSN 6105-01-391-7124
NSN 6650-00-063-4484
NSN 5945-00-734-7263