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 6650-00-971-5054
NSN 6135-01-547-3983
NSN 6620-01-519-2628
NSN 6110-01-031-9670
NSN 6240-01-334-1115
NSN 5925-01-596-2796
NSN 5975-00-413-4428
NSN 5950-01-183-6546
NSN 5998-01-590-7767
NSN 6320-01-215-6459
NSN 5915-00-131-1057
NSN 5999-01-147-4824