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 5920-00-188-7373
NSN 5960-01-052-8228
NSN 4140-01-295-3226
NSN 5930-01-356-4224
NSN 5998-00-896-6094
NSN 6150-01-493-3037
NSN 6145-01-349-6235
NSN 5975-01-618-8881
NSN 5910-00-543-3636
NSN 5920-01-387-6998
NSN 6110-01-148-0316
NSN 2925-00-896-7318