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 5945-01-441-0935
NSN 4140-01-270-4749
NSN 5935-01-398-3550
NSN 6650-01-263-5412
NSN 5965-01-495-9711
NSN 5930-01-501-5144
NSN 5910-01-294-3648
NSN 5990-01-503-0194
NSN 5950-01-566-9305
NSN 6685-00-290-8195
NSN 5920-01-018-2596
NSN 6645-00-919-8902