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 6620-01-296-7987
NSN 6220-00-935-4308
NSN 5835-01-227-2318
NSN 5945-01-379-2297
NSN 6110-00-813-8632
NSN 7035-01-263-5463
NSN 6320-01-558-8844
NSN 6220-00-489-8571
NSN 5950-01-444-0542
NSN 5950-01-508-6812
NSN 5930-01-323-0210
NSN 6685-01-432-0055