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 6105-01-611-7994
NSN 6145-00-225-8709
NSN 5965-01-418-7226
NSN 6650-00-371-0884
NSN 6240-00-269-9477
NSN 6240-01-366-2948
NSN 2925-01-267-1598
NSN 5975-01-617-5291
NSN 5990-01-082-3807
NSN 5930-01-264-7888
NSN 6240-01-129-1688
NSN 6240-01-253-0687