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 6320-01-125-3361
NSN 6620-01-116-3983
NSN 5925-00-772-5724
NSN 6685-01-318-8895
NSN 5996-01-630-5243
NSN 5985-00-740-7154
NSN 5930-00-823-2134
NSN 5925-01-359-3869
NSN 6620-00-244-0965
NSN 6135-01-556-7318
NSN 5985-01-111-4731
NSN 6320-01-554-0901