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 6130-00-647-3829
NSN 5925-01-512-6798
NSN 6105-01-359-5938
NSN 5950-00-320-6655
NSN 7035-00-155-9513
NSN 6685-01-634-0611
NSN 6650-01-274-8586
NSN 5930-01-546-4720
NSN 5990-00-246-2184
NSN 5925-00-905-9144
NSN 6645-00-383-7783
NSN 5996-00-960-9494