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 4140-01-232-8998
NSN 6130-01-004-8977
NSN 6105-00-422-2714
NSN 6610-01-463-8866
NSN 5930-01-255-1124
NSN 6110-00-256-6614
NSN 6220-01-394-4972
NSN 5975-01-500-5724
NSN 5935-01-192-8930
NSN 6220-00-482-8448
NSN 5945-01-256-4133
NSN 7035-01-657-7183