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 4140-01-495-3768
NSN 5950-01-334-6855
NSN 6650-01-530-3763
NSN 6685-01-218-5258
NSN 4140-01-027-7516
NSN 5915-01-145-5340
NSN 5975-01-252-7327
NSN 6240-00-905-0463
NSN 5950-01-351-7185
NSN 5965-01-442-9749
NSN 6110-01-270-0814
NSN 5930-01-390-8800