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 5920-01-581-5095
NSN 5998-01-468-6329
NSN 5975-00-152-1148
NSN 4140-00-908-2763
NSN 6610-00-809-5290
NSN 5960-01-135-5639
NSN 5855-00-832-9341
NSN 5905-00-255-2482
NSN 6220-01-495-7661
NSN 5985-00-359-9067
NSN 5855-01-379-9978
NSN 5990-01-338-2103