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 4140-01-372-3976
NSN 5835-01-106-1456
NSN 5930-00-469-1600
NSN 6685-01-463-9153
NSN 5925-00-862-0142
NSN 5998-00-075-8408
NSN 4140-01-549-0881
NSN 5985-01-328-2361
NSN 6220-01-337-7789
NSN 5996-00-368-9244
NSN 5998-01-483-9840
NSN 5975-01-299-8270