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 5925-01-632-0150
NSN 7035-00-703-3535
NSN 5855-01-035-2866
NSN 6105-01-386-4038
NSN 5945-01-141-7017
NSN 5998-01-328-9154
NSN 6320-00-937-5625
NSN 5895-01-512-8605
NSN 5975-00-035-6524
NSN 5915-00-310-3156
NSN 6320-01-302-5157
NSN 6645-00-943-9063