discounting online. 2 aftermarket lamp filler fuel cap gaskets fits n120cg. most all glass lamp models from 1935 and newer. 1-1/8" diameter. cork composite made in the usa. discountingonline discounting online. 2 aftermarket cork filler fuel cap gaskets fits part number n120cg. works with most all glass lamp models from 1935 and newer. does not work with "metal" aladdin lamps. diameter is 1-1/8". measure yours if unsure. made in the usa.