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 4140-01-087-7607
NSN 5835-01-552-3153
NSN 5915-01-309-6847
NSN 6110-01-231-2568
NSN 5910-01-613-4294
NSN 6110-01-178-9231
NSN 5975-01-451-4799
NSN 7035-01-472-1999
NSN 5855-00-896-4047
NSN 5985-01-239-3943
NSN 5925-01-349-7193
NSN 5920-01-097-9927