Standard Tolerance Chart For Plastic Extrusion

Values are generally on the safe side of the range. It is possible to achieve closer tolerances in certain areas of specific profiles. We recommend that closer tolerances be considered carefully as the benefits may offset the increase in labor cost. The closer the tolerance the slower the plastic extrusion runs. Below are values for some common materials.

                      RPVC   Flex PVC  Polyethylene  Styrene   ABS     Polycarbonate

Wall (%+/-)        8             10               10                 8             8                8

Profile (+/-)      

.035 -.125       .007        .010           .012             .007       .010           .010

.125 -.500       .010         .015           .025            .012        .020          .020

.500 – 1.0        .015         .020          .030            .017        .025           .025

1.0 – 1.50         .020        .030          .035            .025        .027          .027

1.5 – 2.00        .025        .035          .040            .030        .035          .035

2.0 – 3.00       .030        .040          .045           .035         .037          .037

3.0 – 4.00       .045        .065          .065           .050         .050         .050

4.0 – 5.00       .060        .093          .093           .065         .065         .065

5.0 – 7.00       .075         .125           .125             .093         .093         .093

7.0 – 10.0        .093         .150           .150             .125           .125          .125

Inline cut tolerance for 24″ is +/- .250

Cut lengths less than 24″ must be cut offline with a minimum cut length tolerance of +/- .020