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 6145-01-310-8597
NSN 5950-01-171-0520
NSN 5945-00-777-6891
NSN 6150-01-623-1867
NSN 2925-01-068-3844
NSN 5960-01-462-7704
NSN 5855-01-425-6340
NSN 6150-00-436-5454
NSN 6685-00-707-4842
NSN 5915-01-633-9845
NSN 6320-00-139-1090
NSN 5920-01-166-1760