Search Catalog By Keyword By Item # All Categories Polypropylene Washers | Shipping | Tax | Terms Request for Quote 0 Items All Categories > Washer Material Specifications > Polypropylene Washers > Advanced Search Advanced Search in Polypropylene Washers Enter at least one criteria to search items. Material Polypropylene Outside Diameter (in) At Least : No More Than : Available Range: 0.092 to 4.357 in larger image Inside Diameter (in) At Least : No More Than : Available Range: 0.023 to 3.277 in Thickness (in) At Least : No More Than : Available Range: 0.01 to 0.125 in Description Our standard washers are made from Natural homopolymerPolypropyleneASTM D- 4101-0112FDA 21CFR177.1520 ( c)No UL rating