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 5965-01-423-5159
NSN 4140-00-948-7041
NSN 5910-01-419-6765
NSN 5998-00-600-2096
NSN 6135-00-405-1989
NSN 5930-00-278-7731
NSN 6130-00-239-0230
NSN 6145-00-351-4539
NSN 5925-01-081-0436
NSN 5945-01-187-2638
NSN 6320-00-295-2854
NSN 6645-00-726-2716