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 6220-00-541-8515
NSN 5945-00-404-6908
NSN 5925-00-186-8669
NSN 5835-01-485-0210
NSN 5835-01-081-6864
NSN 6685-00-220-2892
NSN 5990-00-951-3124
NSN 7035-00-803-3056
NSN 5920-01-098-6997
NSN 6145-00-308-0247
NSN 6145-01-181-9376
NSN 4140-01-359-6231