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 6135-00-231-7257
NSN 6320-01-046-5228
NSN 6620-01-208-5915
NSN 5835-00-827-1904
NSN 6220-01-461-2499
NSN 5935-01-381-0583
NSN 5965-00-455-7581
NSN 6220-01-198-4842
NSN 5985-01-617-2949
NSN 5999-01-293-5946
NSN 6145-00-891-6779
NSN 5910-00-827-2313