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 6220-00-734-0276
NSN 6105-01-210-3357
NSN 6105-01-391-2042
NSN 5945-01-400-5928
NSN 6645-00-728-1316
NSN 6220-01-036-7365
NSN 5925-01-321-8829
NSN 5975-01-205-0548
NSN 5835-01-285-3704
NSN 6320-01-377-5701
NSN 5950-00-079-0159
NSN 6610-00-161-0680