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 6650-00-078-5773
NSN 5915-00-480-5163
NSN 5920-01-572-0577
NSN 4140-00-659-8283
NSN 5975-01-359-1590
NSN 5895-01-345-4268
NSN 6145-00-889-9764
NSN 5945-01-513-3866
NSN 5855-01-456-8667
NSN 7035-00-480-6767
NSN 6620-01-602-8402
NSN 5925-01-440-9364