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 6610-01-461-1644
NSN 5855-01-212-6612
NSN 2925-01-556-0333
NSN 5996-00-901-0519
NSN 6240-00-586-6428
NSN 6130-00-421-5826
NSN 5998-00-397-6436
NSN 5950-00-790-3702
NSN 5985-00-186-8755
NSN 5999-01-029-7615
NSN 5895-00-621-0543
NSN 5905-00-105-3415