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 5945-00-506-7364
NSN 6320-00-004-9158
NSN 5990-01-261-2962
NSN 6240-01-223-4917
NSN 7035-01-412-8322
NSN 5935-01-294-8283
NSN 5965-01-442-9749
NSN 6145-01-494-5134
NSN 6240-01-245-0137
NSN 6240-01-098-6410
NSN 6610-01-168-6352
NSN 4140-01-661-1043