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 6240-00-617-1818
NSN 2925-01-324-3533
NSN 6220-00-276-8681
NSN 5998-00-596-9568
NSN 5905-00-223-4635
NSN 5905-01-603-6728
NSN 5950-01-373-2670
NSN 6645-01-416-0807
NSN 5975-01-029-4701
NSN 6110-00-659-3348
NSN 5935-01-512-5132
NSN 5950-01-388-3753