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 5935-01-341-7927
NSN 5950-00-444-0492
NSN 6105-00-242-4867
NSN 5915-01-463-8292
NSN 6645-01-450-4151
NSN 6610-00-895-3854
NSN 6110-01-197-8719
NSN 6150-01-145-6278
NSN 5965-01-521-0941
NSN 5999-00-897-9482
NSN 2925-00-906-0421
NSN 5965-01-359-0384