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 6220-00-251-5600
NSN 6620-01-069-8594
NSN 5960-01-272-2124
NSN 5855-01-201-4857
NSN 5950-01-581-1221
NSN 5930-01-108-7334
NSN 6240-01-475-6772
NSN 6145-00-530-8427
NSN 5950-01-415-1563
NSN 5990-01-658-3102
NSN 6610-00-413-5016
NSN 5950-01-027-0695