Rubber Molding Process Selector

Compare injection, compression, and transfer molding for your part. Engelhardt runs all three processes in-house — the recommended choice is engineering driven, not equipment driven.

Annual production volume (pieces/year) Tolerance class required Part geometry complexity Part size

Process Recommendation

Rubber Injection Molding Highest volume, tightest tolerance, lowest cycle time

Tooling: Highest tooling cost ($25K-100K+); strong long-term ROI

Best for: Complex geometry + high volume + tight tolerance

Rubber Compression Molding Lowest tooling cost, supports large parts, moderate tolerance

Tooling: Lowest tooling cost ($5K-30K); cure-driven cycle

Best for: Large, thick, simpler parts at low-to-medium volume

Rubber Transfer Molding Middle-ground precision, excellent for inserts

Tooling: Moderate tooling cost ($10K-50K); plunger-driven

Best for: Insert molding + moderate complexity at medium volume

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