Rubber Tolerance Standard

Tolerances for outside diameters o d inside diameters i d wall thickness width height and general cross sectional dimensions or extrusions.

Rubber tolerance standard. Fixed dimension independent dimension not calculated from other reference dimensions. For example table 4 is for molded rubber products with commercial a3 tolerances. While they are now issued by a new organization the tolerance ranges have remained unchanged. For outside diameters inside diameters wall width height and general cross sectional dimensions of extrusions.

Closure dimension largest outside dimension and additional outside dimensions on the same part. Molded rubber tolerance chart rubber molding tolerances. International standard iso 3302 1 was prepared by technical committee iso tc 45 rubber and rubber products subcommittee sc 4 miscel laneous products. These are helpful when designing and producing a part.

Arpm tolerances association for rubber products manufacturers were formerly known as rma tolerances rubber manufacturers association. Rma tolerances for molded rubber products using the industry standard callouts for rubber tolerancing is good practice and provides for a common understanding between the design engineer and the manufacturer. Please contact u s to review capabilities for your application. Collaboration to establish an agreed standard is key.

For each range of millimeter and inch based part sizes you ll see that plus and minus amounts are given for fixed and closure dimensions. The rubber manufacturers association rma has developed tolerance tables with ranges to provide communication between user and provider across a wide range of industries. The closer tolerance demand very tight control during manufacturing process which incur higher cost. Tolerance levels typically impact cost due to increased processing and higher reject rates.

For a general guide see below downloadable pdf beneath. Extruded rubber tolerance chart rubber extrusion tolerances. This information is provided for general guidance only please contact us to confirm any specific requirements. Linear dimensions bs iso 3302 1.

However some of the table numbers are different. Tolerance levels typically impact cost due to increased processing time and higher reject rates. When you need close tolerance please specify it in drawing or mention it in quote request. When you use the rma handbook for molded rubber products find the tolerance table that you need.

You can also consult the rma article on factors affecting tolerances of molded rubber products.