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 2925-01-368-5773
NSN 6135-01-079-7852
NSN 5915-00-239-6724
NSN 5925-01-040-8963
NSN 5990-01-160-6978
NSN 6220-00-248-5511
NSN 5996-00-562-3838
NSN 6150-01-487-7756
NSN 6110-01-117-8836
NSN 6220-00-022-9700
NSN 5990-01-426-7350
NSN 5996-00-253-2636