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 5985-00-903-8059
NSN 6610-00-471-9096
NSN 5985-01-461-3113
NSN 5985-01-064-8940
NSN 5985-01-481-2803
NSN 5910-00-729-8538
NSN 6320-01-359-3921
NSN 6150-00-499-8798
NSN 6130-00-399-0729
NSN 5975-00-503-0318
NSN 4140-01-196-7490
NSN 4140-01-543-2637