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 6240-01-394-4212
NSN 6685-00-558-0856
NSN 5950-00-425-9937
NSN 5960-00-485-0601
NSN 2925-01-118-6125
NSN 6220-01-196-7513
NSN 5935-00-188-0135
NSN 6110-01-317-4286
NSN 5935-01-590-9846
NSN 5855-00-925-0114
NSN 6650-01-560-0321
NSN 5920-00-844-2488