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 2925-01-258-8141
NSN 5965-01-299-0160
NSN 6105-00-395-7045
NSN 6685-00-295-0824
NSN 6240-00-394-8925
NSN 5920-01-062-2994
NSN 5998-01-053-1860
NSN 5915-01-480-9755
NSN 6645-01-004-7768
NSN 5965-01-344-8592
NSN 5975-01-435-6457
NSN 5920-01-367-2542