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 5910-01-481-8097
NSN 5960-00-266-6741
NSN 6620-01-423-0833
NSN 6110-01-027-8720
NSN 5990-00-247-0975
NSN 7035-01-219-9476
NSN 6130-00-155-5873
NSN 6685-00-186-9190
NSN 4140-00-606-9453
NSN 5960-01-111-7923
NSN 6645-01-014-2849
NSN 6650-01-189-7040