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 5895-00-244-0943
NSN 4140-00-376-5712
NSN 5920-00-102-8713
NSN 5975-01-610-9586
NSN 5930-01-577-3655
NSN 5999-01-159-0959
NSN 5925-01-467-9181
NSN 6105-00-071-8174
NSN 5910-01-328-8943
NSN 6610-01-466-3983
NSN 6220-01-459-1999
NSN 6105-00-916-9456