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 5915-00-488-7437
NSN 5835-01-106-1456
NSN 5975-01-135-5954
NSN 5999-01-556-5575
NSN 5985-00-333-9603
NSN 5950-01-485-0246
NSN 6685-01-426-8929
NSN 5930-00-388-6758
NSN 5930-00-299-7623
NSN 6150-01-350-6639
NSN 6150-01-181-4530
NSN 6220-01-249-2349