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 5960-01-276-7836
NSN 5855-01-583-1037
NSN 5905-00-708-0891
NSN 5855-01-588-3771
NSN 5960-01-476-5686
NSN 6610-01-559-1447
NSN 5930-01-463-4704
NSN 6320-00-225-7013
NSN 6240-01-184-6831
NSN 6610-01-649-5326
NSN 6220-01-152-9923
NSN 6620-00-740-3699