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 5975-00-189-0857
NSN 5985-01-485-1879
NSN 5975-01-202-7423
NSN 6620-00-770-9794
NSN 5945-01-367-6090
NSN 5950-01-250-1333
NSN 6130-01-444-3909
NSN 4140-00-219-3146
NSN 6110-01-477-1496
NSN 5975-00-267-8061
NSN 6150-01-245-6148
NSN 5855-00-357-1158