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 6610-01-287-9814
NSN 5990-01-485-0260
NSN 5945-01-134-7701
NSN 5996-00-163-4950
NSN 5950-00-230-2809
NSN 5935-00-764-9413
NSN 5996-01-644-9333
NSN 5895-01-231-9895
NSN 5998-00-368-0439
NSN 6145-01-478-8835
NSN 6105-01-224-7258
NSN 6620-01-608-0978