High Tolerance Orifices High Tolerance Orifices   As a long term supplier to manufacturers of fluid proportioning and handling equipment, DEIMLING/jeliho Plastics provides orifices and metering tips with through-hole sizes down to .006”, while holding tolerances of +/- .0003”. Our time proven technology for molding small, high tolerance holes is now being used to mold parts for a variety of customers serving diverse markets. Contact us to discuss how we can use our proprietary technology to improve your product.