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 5835-01-449-7511
NSN 5985-01-398-6523
NSN 5925-00-201-8254
NSN 5920-01-339-7421
NSN 5930-01-341-8507
NSN 5920-00-324-2315
NSN 2925-01-483-2389
NSN 5985-00-650-9883
NSN 6240-01-012-0831
NSN 5999-01-317-3990
NSN 5925-00-959-6075
NSN 6620-00-757-7511