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 5835-01-589-4735
NSN 5930-00-542-3901
NSN 5990-01-453-3552
NSN 5975-01-506-2322
NSN 5835-01-270-7899
NSN 5996-01-199-7494
NSN 5925-01-563-0165
NSN 6645-01-019-7686
NSN 5950-01-144-0661
NSN 5965-00-196-7320
NSN 5855-00-361-0167
NSN 6240-01-173-7809