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 5975-00-687-2196
NSN 6610-01-561-9971
NSN 2925-00-020-7524
NSN 6610-01-381-3181
NSN 5935-00-555-2633
NSN 6610-01-141-7014
NSN 6645-01-221-9424
NSN 6105-00-306-0913
NSN 5998-00-471-1603
NSN 5920-01-223-3116
NSN 5999-01-435-3870
NSN 6220-01-435-6297