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 4140-01-082-8803
NSN 6220-00-963-4689
NSN 5910-01-153-2651
NSN 6320-00-483-0451
NSN 7035-01-387-0493
NSN 5895-01-211-0855
NSN 5930-01-283-3743
NSN 6685-00-546-5755
NSN 4140-01-109-5957
NSN 5905-01-078-2339
NSN 6105-01-463-9928
NSN 6650-00-583-1735