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 6135-01-440-9412
NSN 5950-00-761-4555
NSN 5975-00-984-6582
NSN 6105-01-153-2302
NSN 6645-00-679-8203
NSN 5998-01-400-6739
NSN 6220-01-078-8576
NSN 5905-01-485-3569
NSN 6145-01-351-6342
NSN 5945-01-253-7529
NSN 5990-01-594-7470
NSN 5835-01-014-4574