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 6240-00-536-1867
NSN 5920-01-302-1995
NSN 5960-00-232-2512
NSN 6610-01-322-7677
NSN 6220-01-642-0250
NSN 4140-00-526-4505
NSN 5925-00-211-4313
NSN 5945-01-350-1931
NSN 6620-01-505-7921
NSN 5925-01-021-7669
NSN 5915-01-535-1185
NSN 6150-01-383-8513