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 5950-01-147-3878
NSN 5910-01-204-6165
NSN 4140-01-089-9724
NSN 6135-01-329-7994
NSN 5915-01-115-2953
NSN 7035-00-931-9415
NSN 5930-00-962-4695
NSN 6620-01-430-7104
NSN 6620-00-753-0745
NSN 6610-00-915-3215
NSN 5925-01-542-4124
NSN 6145-01-566-7295