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 5925-01-224-6191
NSN 6130-01-454-0902
NSN 5985-01-569-6671
NSN 5915-01-588-5902
NSN 6610-01-329-9067
NSN 5960-01-228-8858
NSN 6620-01-540-1524
NSN 6610-00-487-4637
NSN 5999-01-497-0825
NSN 6645-01-459-7788
NSN 6105-01-265-5084
NSN 2925-01-603-6379