Custom rubber planning guide
Can switching suppliers improve your rubber supply chain?
A supplier change should solve a defined problem, not simply produce a lower unit price. Start with the part, the current failure points and the cost of changing. A careful review can show where a different material, process or supply plan may help. Savings and timing depend on your project and must be confirmed in a quote.
Start with the problem you want to fix
Are you dealing with inconsistent dimensions, recurring rejects, unclear specifications, difficult communication or an unreliable replenishment plan? Separate the symptom from the cause. For example, a fit problem may come from the drawing, compound shrinkage, tooling or the inspection method. Moving the same unresolved problem to another supplier may not fix it.
Compare the total cost, not only the piece price
Build a comparison that includes tooling, samples, testing, freight, packaging, inspection, scrap, rework and the inventory you need to carry. Include the time your team spends sorting problems. Ask what is included in each quote so that a low price does not hide a different scope.
Check the part before changing the source
Collect the current drawing revision, material and hardness requirements, key dimensions, test requirements and a sample if available. Confirm whether existing tooling can be transferred and who owns it. A new supplier may need new tooling, qualification or customer approval; do not assume the existing approval transfers.
Make the transition a controlled project
Agree on sample acceptance, inspection records and any required customer approvals before production release. Plan a trial quantity and replenishment timing around your actual demand. Keep an approved backup plan until the new source has met your requirements. Avoid switching every critical part at once solely to chase a price.
How COi can help you evaluate the change
COi reviews material selection, tolerances, tooling, prototyping and testing from drawing to production. Send the drawing, material and durometer, expected usage and a short explanation of what is not working today. The team can review practical options and identify missing information before preparing a quote. No cost reduction or delivery date is promised by this guide.
Questions to bring to the first conversation
Which costs are included? What samples and test evidence are needed? Who approves the change? What tooling is required? What is the agreed acceptance criteria? Which timing assumptions depend on information or approvals from your team?
Related reading: Engineering support · Material technology. General planning information only. Requirements and commercial terms must be confirmed for your project.