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 5960-01-438-0245
NSN 7035-01-571-5168
NSN 5895-00-427-4500
NSN 5925-01-281-7511
NSN 5945-00-302-9392
NSN 6620-00-075-6667
NSN 6135-01-440-9412
NSN 5990-01-443-2931
NSN 6240-01-431-5790
NSN 5999-01-576-9958
NSN 5990-00-365-4591
NSN 5975-01-555-9160