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 6320-00-218-6105
NSN 6610-01-293-9838
NSN 6130-01-080-2926
NSN 6240-00-813-6328
NSN 6685-00-499-2953
NSN 5915-00-265-0967
NSN 5999-01-525-7937
NSN 5910-01-337-8410
NSN 5925-01-485-9235
NSN 6135-01-434-0417
NSN 5960-01-367-6153
NSN 6105-01-423-8242