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 5915-00-699-4492
NSN 5996-00-383-6173
NSN 5996-01-472-2112
NSN 5910-01-373-9886
NSN 6240-01-622-5768
NSN 5998-01-511-0109
NSN 5975-01-315-6378
NSN 5965-00-263-6436
NSN 6320-01-607-0347
NSN 5996-00-177-3463
NSN 6110-01-522-2165
NSN 6650-01-017-6716