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 5855-01-550-5219
NSN 6320-00-284-1524
NSN 5950-01-076-5783
NSN 5965-01-236-6827
NSN 6110-00-969-7065
NSN 5998-00-237-1937
NSN 5910-01-287-4403
NSN 5925-01-011-6551
NSN 5990-00-128-6289
NSN 5945-00-835-0362
NSN 6220-00-471-4011
NSN 4140-00-099-9205