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 6240-00-946-7168
NSN 7035-00-442-1869
NSN 5920-01-589-2408
NSN 5960-01-054-3752
NSN 6135-00-078-9931
NSN 6620-01-152-9453
NSN 5996-01-434-9060
NSN 5855-01-485-3429
NSN 5910-01-475-8403
NSN 6135-01-383-1910
NSN 5895-00-596-8678
NSN 5990-01-116-2181