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 6135-00-377-9165
NSN 5998-00-001-9703
NSN 7035-01-391-3518
NSN 5975-01-029-4176
NSN 6150-00-201-9583
NSN 6150-01-191-5846
NSN 6135-01-512-8740
NSN 6620-01-468-9288
NSN 6145-00-973-7392
NSN 7035-01-323-0164
NSN 5945-00-222-3744
NSN 5915-01-032-1850