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 5915-01-181-6626
NSN 5910-01-592-1459
NSN 5935-01-230-4910
NSN 5965-00-253-1302
NSN 6130-00-130-1156
NSN 5835-01-632-6627
NSN 5990-01-334-8634
NSN 5960-01-648-1872
NSN 6645-00-192-1152
NSN 6130-01-281-6809
NSN 5930-01-053-5341
NSN 5960-00-568-2437