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 5975-00-468-6111
NSN 5960-00-125-0026
NSN 5925-01-551-6292
NSN 6620-01-272-7831
NSN 6685-01-054-4409
NSN 5835-00-649-9402
NSN 5920-00-064-3523
NSN 6320-01-220-2264
NSN 6620-00-852-0568
NSN 5935-01-623-0689
NSN 6685-00-527-6376
NSN 6620-01-007-1057