Rubber Tolerance Standard

By simply calling out the standard can eliminate the need to tolerancing each specific feature on a print.

Rubber tolerance standard. Tolerance levels typically impact cost due to increased processing and higher reject rates. Arpm tolerances association for rubber products manufacturers were formerly known as rma tolerances rubber manufacturers association. For outside diameters inside diameters wall width height and general cross sectional dimensions of extrusions. Extruded rubber tolerance chart rubber extrusion tolerances.

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. When you need close tolerance please specify it in drawing or mention it in quote request. This edit ion of iso 3302 1 cancels and replaces iso 3302 1 199 60 rubber tolerance for products dpart 1 dimensional tolerances for use. Closure dimension largest outside dimension and additional outside dimensions on the same part.

Linear dimensions bs iso 3302 1. Molded rubber tolerance chart rubber molding tolerances. Standard rubber tolerances for molded rubber parts 262 632 2345. Tolerances for outside diameters o d inside diameters i d wall thickness width height and general cross sectional dimensions or extrusions.

While they are now issued by a new organization the tolerance ranges have remained unchanged. For a general guide see below downloadable pdf beneath. The closer tolerance demand very tight control during manufacturing process which incur higher cost. When you use the rma handbook for molded rubber products find the tolerance table that you need.

Please contact u s to review capabilities for your application. Tolerance levels typically impact cost due to increased processing time and higher reject rates. These are helpful when designing and producing a part. However some of the table numbers are different.

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. Fixed dimension independent dimension not calculated from other reference dimensions. International standard iso 3302 1 was prepared by technical committee iso tc 45 rubber and rubber products subcommittee sc 4 miscel laneous products. For example table 4 is for molded rubber products with commercial a3 tolerances.

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