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 6145-00-327-1954
NSN 5950-01-006-1766
NSN 5965-00-568-5802
NSN 5925-00-031-4108
NSN 5998-01-244-3370
NSN 5910-01-100-6989
NSN 5835-01-178-4154
NSN 5920-00-127-8098
NSN 5998-01-432-2889
NSN 5915-01-134-2815
NSN 6110-00-918-8768
NSN 6685-00-704-2046