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 5910-00-992-0911
NSN 5835-01-012-1436
NSN 7035-00-523-7492
NSN 5920-01-163-0551
NSN 5950-01-362-3460
NSN 6610-01-394-2872
NSN 6610-00-877-5905
NSN 5996-01-346-0676
NSN 6220-01-600-0245
NSN 5996-00-767-4877
NSN 6240-00-771-2263
NSN 4140-01-244-5140