Rubber, Tires, Foam & Elastomer Manufacturing worked example

Elastomer Defect Rate at 65% expected first-pass yield: a worked example

Suppose expected first-pass yield falls to 65%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate elastomer defect rate for rubber, tires, foam and elastomer manufacturing using production-ready inputs so teams can measure output per hour and compare it with the required production pace.

The inputs for this scenario

  • Good elastomer parts produced per shift: 1,200 units (held at the documented default)
  • Molding line runtime per shift: 8 hr (held at the documented default)
  • Expected first-pass yield (defect-free rate): 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Elastomer defect rate throughput = elastomer defect rate output quantity รท elastomer defect rate runtime.
  • Effective elastomer defect rate throughput works out to 97.5 units/hr at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 units/hr at these inputs.
  • Expected elastomer defect rate efficiency works out to 65 % at these inputs.
  • Elastomer defect rate runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where expected first-pass yield sits at 90% and the headline result is 135 units/hr, this scenario comes in 27.78% below the baseline at 97.5 units/hr.
  • It converts total parts and runtime into raw throughput, then multiplies by expected first-pass yield to give effective defect-free units per hour. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Effective elastomer defect rate throughput: 97.5 units/hr (headline result)
  • Raw throughput: 150 units/hr
  • Expected elastomer defect rate efficiency: 65 %
  • Elastomer defect rate runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Elastomer Defect Rate calculator, set expected first-pass yield to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.