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 6685-01-514-1117
NSN 5965-01-573-3947
NSN 5930-01-425-6403
NSN 6620-01-168-7705
NSN 5835-01-359-2575
NSN 7035-00-557-5570
NSN 6220-00-730-5808
NSN 4140-01-370-4075
NSN 6110-00-633-5253
NSN 5910-00-948-3130
NSN 6110-01-512-9520
NSN 5985-01-150-2700