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 5855-01-530-4147
NSN 6240-01-392-0455
NSN 5975-00-267-2776
NSN 5855-01-652-6746
NSN 6240-01-197-0489
NSN 5965-01-125-5367
NSN 6240-01-428-9410
NSN 5998-01-654-8106
NSN 2925-01-554-5246
NSN 5915-01-237-0683
NSN 4140-00-146-1633
NSN 5975-01-284-8669