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 5935-01-351-5689
NSN 6150-00-400-7238
NSN 5990-01-442-3520
NSN 6240-01-348-0057
NSN 6240-00-952-4501
NSN 5998-01-157-3718
NSN 6645-01-425-2330
NSN 4140-01-542-9504
NSN 6320-01-198-4024
NSN 7035-01-458-3532
NSN 5915-01-446-7238
NSN 6645-01-379-0593