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 5965-00-691-9130
NSN 5910-00-968-8021
NSN 6220-01-445-5544
NSN 6135-01-066-3469
NSN 6220-00-635-8818
NSN 5930-01-124-0407
NSN 5835-00-827-1904
NSN 6620-01-064-0366
NSN 5905-01-106-3515
NSN 6145-01-142-2234
NSN 6610-01-224-3814
NSN 6105-01-488-7923