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 6650-01-052-2143
NSN 5895-00-941-5457
NSN 5905-01-183-2801
NSN 5996-00-958-7965
NSN 2925-00-562-4836
NSN 7035-00-135-4758
NSN 6135-01-462-6040
NSN 5975-00-403-7593
NSN 5930-01-556-5403
NSN 5975-00-731-1249
NSN 5925-01-441-9316
NSN 5960-00-267-9298