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 5925-01-278-4957
NSN 6240-01-292-3729
NSN 5930-00-187-3735
NSN 5925-01-025-9612
NSN 5975-01-492-5505
NSN 5950-00-176-2874
NSN 5905-00-896-5204
NSN 5975-00-583-8625
NSN 5996-00-417-9706
NSN 5945-00-388-8826
NSN 6320-00-731-6134
NSN 5935-01-615-9479