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 5975-00-917-4430
NSN 5895-00-227-4752
NSN 6145-01-334-4248
NSN 5930-01-275-3010
NSN 5960-00-840-7103
NSN 6135-00-299-6918
NSN 5998-01-570-9547
NSN 4140-00-205-6491
NSN 6110-00-422-4973
NSN 6145-01-276-5114
NSN 6135-00-262-6807
NSN 6150-01-492-5811