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 5835-01-141-4975
NSN 5965-00-330-9672
NSN 5975-01-090-3581
NSN 5915-01-256-2584
NSN 5985-01-057-8944
NSN 6150-00-852-7042
NSN 5895-00-889-1084
NSN 5910-01-370-1888
NSN 6610-00-199-8915
NSN 7035-01-421-0061
NSN 5990-00-964-9672
NSN 6150-01-326-5695