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 5925-00-437-2854
NSN 6220-01-546-6371
NSN 7035-00-463-7143
NSN 5920-01-425-2336
NSN 5925-01-444-9197
NSN 5930-01-029-8635
NSN 5996-01-548-7746
NSN 6145-01-433-3886
NSN 6650-01-290-4001
NSN 5996-01-630-5791
NSN 5950-00-168-6297
NSN 5950-00-957-7766