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 5835-01-013-9321
NSN 5895-01-587-8582
NSN 6135-00-321-6707
NSN 5895-01-034-4654
NSN 5998-00-969-1777
NSN 5998-01-293-5927
NSN 5915-01-501-2590
NSN 4140-01-604-9981
NSN 5915-00-926-8126
NSN 6685-01-215-1204
NSN 6130-00-941-8224
NSN 5998-00-707-5781