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 5975-01-451-4799
NSN 5960-01-069-2009
NSN 6110-00-146-2114
NSN 6135-00-519-1325
NSN 6645-01-595-0570
NSN 6110-00-786-6169
NSN 5985-01-646-6767
NSN 6110-01-429-8668
NSN 5925-00-206-3580
NSN 5990-01-170-0077
NSN 5975-01-487-4379
NSN 5925-00-901-4931