Gaskets, Seals, O-Rings & Elastomer Components worked example

Compound Usage at 99% compound transfer efficiency: a worked example in gaskets, seals, o-rings & elastomer components

Push compound transfer efficiency up to 99% and the picture changes. This example computes every intermediate figure at that operating point. Use it when purchasing or production needs to size nitrile, EPDM, silicone, neoprene, FKM, polyurethane, or custom compound demand before a molding, extrusion, or die-cut run.

The inputs for this scenario

  • Elastomer parts to produce: 8,500 parts (unchanged)
  • Compound use per part: 0.02 kg / part (unchanged)
  • Compound transfer efficiency: 99 % (raised for this scenario; the documented default is 88)

Working through the calculation

  • Applying the documented formula (Required compound usage = elastomer parts to produce × compound use per part ÷ compound transfer efficiency) to the inputs above produces each figure below.
  • At this operating point the engine returns 155 units for required quantity, the number this scenario is built around.
  • At this operating point the engine returns 153 units for theoretical amount.
  • At this operating point the engine returns 1.55 units for compound loss allowance.
  • At this operating point the engine returns 99 % for compound transfer efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where compound transfer efficiency sits at 88% and the headline result is 174 units, this scenario comes in 11.11% below the baseline at 155 units.
  • It computes the gross compound required for a run after transfer losses, plus the theoretical part mass and the loss allowance between them. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Required quantity: 155 units (headline result)
  • Theoretical amount: 153 units
  • Compound loss allowance: 1.55 units
  • Compound transfer efficiency: 99 %

Run it with your numbers

  • Every input above is editable in the live Compound Usage calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.