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 6135-00-152-8729
NSN 5920-01-512-2054
NSN 5930-01-605-3715
NSN 5895-01-219-9927
NSN 5920-00-081-9156
NSN 6320-01-564-0893
NSN 6610-01-400-3880
NSN 5935-01-104-4740
NSN 5990-00-689-5736
NSN 6130-01-495-7035
NSN 5905-01-573-1316
NSN 5895-01-477-6728