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 5930-01-157-9501
NSN 6240-01-435-6505
NSN 6320-00-977-3930
NSN 5855-01-351-2541
NSN 5920-01-153-2690
NSN 6145-01-578-0526
NSN 5935-00-185-5560
NSN 5895-00-241-9375
NSN 5930-00-772-6412
NSN 5935-01-634-0668
NSN 6105-01-366-6797
NSN 4140-00-541-9077