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 5925-01-030-2967
NSN 5945-00-523-3565
NSN 5910-01-237-5752
NSN 5910-01-461-3048
NSN 7035-01-322-8180
NSN 5985-01-428-7295
NSN 5915-01-416-8614
NSN 6240-00-594-7138
NSN 6620-00-411-4983
NSN 6645-00-327-4005
NSN 6650-00-460-5059
NSN 5990-01-178-5091