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 6240-00-799-9580
NSN 4140-01-433-7613
NSN 6110-01-145-9982
NSN 6610-00-454-6635
NSN 5895-01-332-6248
NSN 5965-00-888-2643
NSN 5950-01-552-6952
NSN 5895-01-146-5382
NSN 5945-01-514-7952
NSN 5930-00-925-1891
NSN 6610-01-170-2905
NSN 5925-01-150-8127