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 6610-01-168-7943
NSN 5996-01-322-4838
NSN 5945-00-294-4869
NSN 5915-01-491-4380
NSN 6135-00-166-5984
NSN 5975-00-844-1066
NSN 6145-00-360-7760
NSN 6150-01-437-6288
NSN 5990-00-170-4239
NSN 5835-01-158-6878
NSN 6150-01-176-6336
NSN 2925-01-551-5375