RMA TOLERANCES FOR MOLDED PRODUCTS Standard Dimensional Tolerance Table - Molded Rubber Products Drawing Designation "A1" High Precision Size (Millimeters) Fixed Closure Size (Inches) Fixed Closure Above Incl. 0 10 10 16 16 25 25 40 40 63 63 100 100 160 ± .10 ± .13 ± .16 ± .20 ± .25 ± .32 ± .40 ± .13 ± .16 ± .20 ± .25 ± .32 ± .40 ± .50 Above Incl. 0 .40 .40 .63 .63 1.00 1.00 1.60 1.60 2.50 2.50 4.00 4.00 6.30 ± .004 ± .005 ± .006 ± .008 ± .010 ± .013 ± .016 ± .005 ± .006 ± .008 ± .010 ± .013 ± .016 ± .020 Standard Dimensional Tolerance Table - Molded Rubber Products Drawing Designation "A2" Precision Size (Millimeters) Fixed Closure Size (Inches) Fixed Closure Above Incl. 0 10 10 16 16 25 25 40 40 63 63 100 100 160 160 & over multiply by ± .16 ± .20 ± .25 ± .32 ± .40 ± .50 ± .63 .004 ± .20 ± .25 ± .32 ± .40 ± .50 ± .63 ± .80 .005 Above Incl. 0 .40 .40 .63 .63 1.00 1.00 1.60 1.60 2.50 2.50 4.00 4.00 6.30 6.30 & over multiply by ± .006 ± .008 ± .010 ± .013 ± .016 ± .020 ± .025 .004 ± .008 ± .010 ± .013 ± .016 ± .020 ± .025 ± .032 .005 Standard Dimensional Tolerance Table - Molded Rubber Products Drawing Designation "A3" Commercial Size (Millimeters) Fixed Closure Size (Inches) Fixed Closure Above Incl. 0 10 10 16 16 25 25 40 40 63 63 100 100 160 160 & over multiply by ± .20 ± .25 ± .32 ± .40 ± .50 ± .63 ± .80 .005 ± .32 ± .40 ± .50 ± .63 ± .80 ± 1.00 ± 1.25 .008 ± .008 ± .010 ± .013 ± .016 ± .020 ± .025 ± .032 .005 ± .013 ± .016 ± .020 ± .025 ± .032 ± .040 ± .050 .008 Standard Dimensional Tolerance Table - Molded Rubber Products Drawing Designation "A4" Basic Size (Millimeters) Fixed Closure Size (Inches) Fixed Closure Above Incl. 0 10 10 16 16 25 25 40 40 63 63 100 100 160 160 & over multiply by ± .32 ± .40 ± .50 ± .63 ± .80 ± 1.00 ± 1.25 .008 ± .80 ± .90 ± 1.00 ± 1.12 ± 1.25 ± 1.40 ± 1.60 .010 Above Incl. 0 .40 .40 .63 .63 1.00 1.00 1.60 1.60 2.50 2.50 4.00 4.00 6.30 6.30 & over multiply by ± .013 ± .016 ± .020 ± .025 ± .032 ± .040 ± .050 .008 ± .032 ± .036 ± .040 ± .045 ± .050 ± .056 ± .063 .010 Why use Silicone Rubber? Typical Properties for Silicone RMA Tolerances for Molded Products RMA Tolerances for Extruded Products RMA Tolerances for Cutting to Length Extrusions General Compatibility Chart for Various Rubber Materials
