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 5930-01-049-8438
NSN 5975-01-181-6212
NSN 7035-00-433-5670
NSN 5930-01-186-8084
NSN 5895-01-581-1137
NSN 5895-01-161-7157
NSN 5999-01-477-5456
NSN 6320-00-070-4544
NSN 6220-01-326-7203
NSN 6240-01-454-1603
NSN 5998-01-408-2409
NSN 4140-00-259-2567