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 5905-01-311-9254
NSN 5965-01-554-9501
NSN 6620-00-132-1151
NSN 4140-00-095-6452
NSN 5945-00-056-8452
NSN 6645-01-512-2260
NSN 5925-01-634-0664
NSN 5910-01-475-5478
NSN 5950-01-310-4492
NSN 5915-01-468-7242
NSN 5915-01-523-6727
NSN 6610-01-316-7824