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 4140-01-084-9429
NSN 5925-00-118-8059
NSN 4140-00-274-9638
NSN 6145-01-104-6029
NSN 2925-01-391-9247
NSN 6130-01-381-5366
NSN 6620-01-165-3784
NSN 6220-01-379-3498
NSN 5925-01-468-7146
NSN 6610-01-321-6904
NSN 5996-01-544-4811
NSN 6150-01-265-1142