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 5950-01-155-5230
NSN 6645-01-209-0264
NSN 6320-00-098-2858
NSN 5945-00-752-5908
NSN 6105-01-065-2439
NSN 6685-00-082-3153
NSN 5965-01-238-9287
NSN 4140-01-005-0154
NSN 5925-00-379-0920
NSN 6645-01-539-2920
NSN 5965-00-539-7778
NSN 5905-01-601-4749