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 5996-01-399-6677
NSN 5975-01-128-0214
NSN 5945-00-497-4019
NSN 6240-01-469-8121
NSN 5999-00-422-5384
NSN 5945-00-456-0699
NSN 5905-01-328-7904
NSN 6135-01-611-0125
NSN 5935-00-637-2643
NSN 5835-01-557-9062
NSN 6685-00-100-4753
NSN 5930-01-218-5641