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 5895-01-188-7470
NSN 5950-01-504-1230
NSN 6610-01-278-9704
NSN 5930-01-242-9209
NSN 6145-00-681-1585
NSN 4140-01-647-6963
NSN 5910-00-230-8162
NSN 5975-01-371-9783
NSN 5895-01-462-2764
NSN 5855-01-307-4520
NSN 5935-01-497-9241
NSN 6320-01-054-3046