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 6105-00-515-5886
NSN 2925-01-302-8591
NSN 6620-00-286-5721
NSN 5965-01-648-5763
NSN 5965-01-141-8785
NSN 5990-00-583-9920
NSN 5930-01-596-0115
NSN 5998-00-624-2826
NSN 2925-01-580-2993
NSN 5930-00-349-7017
NSN 6135-01-089-4888
NSN 5950-01-236-8174