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 6135-00-276-7625
NSN 6135-01-450-3781
NSN 6645-01-573-7603
NSN 6105-01-458-2834
NSN 6320-01-268-3072
NSN 6650-01-340-9809
NSN 6650-00-878-8909
NSN 6320-01-503-7180
NSN 6220-01-427-2333
NSN 5925-00-177-4654
NSN 5950-01-182-0787
NSN 6645-01-147-5579