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 6220-01-090-0126
NSN 5910-00-131-7444
NSN 5895-01-566-3163
NSN 5910-01-339-6754
NSN 5996-01-348-1285
NSN 6610-00-407-4295
NSN 5935-00-061-0773
NSN 5975-01-483-5255
NSN 5945-00-959-3149
NSN 5960-01-247-4560
NSN 6610-01-300-8383
NSN 4140-00-484-4040