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 5996-00-829-0661
NSN 5920-00-180-0223
NSN 5935-01-332-5247
NSN 6220-01-335-0201
NSN 2925-00-288-1394
NSN 6320-00-456-0836
NSN 2925-00-188-5003
NSN 5930-01-526-1675
NSN 6645-01-018-1799
NSN 5930-01-257-0543
NSN 5935-01-257-9779
NSN 5910-00-248-6899