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 5935-00-012-4200
NSN 5975-01-581-5719
NSN 6105-01-545-8159
NSN 5895-01-075-1667
NSN 5910-01-434-4608
NSN 5950-00-215-6587
NSN 6645-01-250-2394
NSN 6685-00-622-2167
NSN 6620-01-346-9340
NSN 6130-00-558-6112
NSN 2925-00-838-7164
NSN 6135-01-557-9656