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 5935-00-763-8697
NSN 2925-01-293-2986
NSN 6620-01-032-3937
NSN 6130-01-476-2835
NSN 6135-01-438-0228
NSN 4140-01-395-6572
NSN 5915-00-253-0710
NSN 6620-01-468-2795
NSN 5855-00-058-1293
NSN 5998-00-362-6658
NSN 6240-01-356-5855
NSN 4140-01-214-4597