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 6220-01-271-2678
NSN 5975-00-973-1324
NSN 6610-00-033-3289
NSN 5915-00-413-2395
NSN 5975-01-492-9860
NSN 6130-01-090-0631
NSN 6150-01-505-5983
NSN 5945-00-013-2041
NSN 5965-01-511-5392
NSN 4140-01-197-4273
NSN 5905-00-456-2525
NSN 6145-01-181-9376