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 5945-01-414-3878
NSN 5930-01-553-7081
NSN 2925-00-707-6770
NSN 7035-01-056-4603
NSN 7035-01-428-2336
NSN 6620-01-539-2101
NSN 5975-01-518-7382
NSN 5945-01-060-3216
NSN 5930-01-453-7684
NSN 6105-00-556-2123
NSN 5990-01-423-8189
NSN 5930-01-146-8950