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 5910-01-611-5753
NSN 5835-00-179-8451
NSN 2925-00-020-7524
NSN 6130-01-447-2797
NSN 5935-00-764-1527
NSN 5925-01-429-0365
NSN 5965-01-158-4187
NSN 5985-00-652-1631
NSN 5999-01-025-6686
NSN 5950-01-098-8634
NSN 6130-01-223-9169
NSN 6240-00-646-5011