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 4140-01-422-2056
NSN 2925-00-909-2596
NSN 5920-01-167-5884
NSN 5990-00-901-2574
NSN 5895-00-321-9484
NSN 5950-01-575-0928
NSN 4140-01-089-9724
NSN 7035-01-413-6697
NSN 5925-01-360-5605
NSN 4140-01-641-4286
NSN 5895-01-027-1192
NSN 5920-00-953-5037