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 5835-01-435-4139
NSN 6110-01-165-4473
NSN 5935-00-679-5346
NSN 6130-00-205-1714
NSN 6650-01-155-3292
NSN 6130-01-442-3185
NSN 5930-01-642-8388
NSN 6320-01-157-9076
NSN 6220-00-255-5652
NSN 6145-00-323-6021
NSN 6240-00-968-7971
NSN 2925-00-480-9068