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 5930-00-582-1730
NSN 5930-00-661-2280
NSN 5935-01-247-3520
NSN 5998-00-280-2733
NSN 2925-01-196-6187
NSN 5990-01-278-9985
NSN 5855-00-357-1158
NSN 5950-01-651-0195
NSN 5925-01-067-2928
NSN 5855-01-631-8782
NSN 5965-01-370-1891
NSN 6220-00-298-9302