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 5950-00-189-0551
NSN 6685-01-465-1250
NSN 5999-01-134-2489
NSN 5960-00-099-9790
NSN 5915-01-106-3511
NSN 5998-01-484-0327
NSN 5855-01-264-8599
NSN 6110-01-237-5938
NSN 6320-01-170-4068
NSN 7035-00-020-2227
NSN 5920-01-128-3572
NSN 4140-01-645-4628