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 4140-00-133-7986
NSN 5905-01-381-7943
NSN 5920-01-116-1789
NSN 6130-00-876-2511
NSN 6320-01-631-7828
NSN 5985-01-323-6650
NSN 7035-01-129-7834
NSN 7035-01-232-7263
NSN 5975-00-541-8531
NSN 2925-01-247-8058
NSN 5998-00-541-8792
NSN 6620-01-627-0478