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 5935-01-507-1213
NSN 5930-00-203-5594
NSN 5915-00-933-9192
NSN 4140-01-287-5429
NSN 4140-00-981-8580
NSN 6620-00-072-6793
NSN 5925-00-581-6902
NSN 5925-01-411-6028
NSN 4140-01-627-8200
NSN 6320-01-607-0347
NSN 5990-00-935-5610
NSN 5935-01-048-6624