Insulation Durometer Hardness
Scale A & D/per ASTM D-2240
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| "A" SCALE: SOFT MATERIALS | |
|---|---|
| Material | Rating |
| Standard PVC | A85-A90 |
| Semi-Rigid PVC | A90-A96 |
| Irradiated PVC | A94-A96 |
| Flexible PVC | A72-A76 |
| Silicone Rubber | A50-A60 |
| TPR (Shell Elexar Rubber) - #8431Z | A67 |
| TPR (Shell Elexar Rubber) - #8712Z | A65 |
| TPR (Shell Elexar Rubber) - #8623Z | A95 |
| "D" SCALE: HARD MATERIALS | |
|---|---|
| Material | Rating |
| Low Density Polyolefins | D45 |
| High Density Polyolefins | D48 |
| Rulan Polyolefins | D55 |
| Cross-Linked Polyolefins | D51 |
| Kynar | D70-D80 |
| Tefze | D75 |
| FEP | D59 |
| TFE | D52 |
| PFA | D60 |
| Halar | D75 |