How to Prepare a Complete RFQ for Custom Silicone Parts

A clear request for quotation helps a silicone supplier review feasibility, select an appropriate process and prepare a quotation with fewer assumptions. The goal is not to have every engineering answer before contacting a supplier. It is to separate confirmed requirements from items that still need technical review.

1. Start with the application

Describe what the part does, where it is installed and the conditions it must withstand. Include expected temperature exposure, contact with water, oils or cleaning agents, indoor or outdoor use and whether the part is decorative, protective, sealing or load bearing. Application context helps the engineering team identify questions that may not be obvious from a drawing alone.

2. Attach the best available geometry

Provide a 2D drawing, 3D file, dimensioned sketch or physical sample. Mark critical dimensions separately from reference dimensions. If the design is not final, state which dimensions can change. For molded parts, undercuts, wall thickness, parting lines, draft, venting and expected cosmetic surfaces can affect tooling and production decisions.

3. Define material requirements without over-specifying

State the required silicone type if it is already known. Otherwise provide the intended use, hardness range, color, transparency, surface finish and applicable market or testing requirements. Ask the supplier to identify the proposed material and documentation for the project. Avoid assuming that one material declaration automatically covers every finished-product requirement.

4. Explain tolerances and acceptance criteria

Do not apply the tightest tolerance to every dimension. Identify the features that control fit, sealing, assembly or appearance. Explain how parts will be inspected and whether gauges, mating components or functional tests are available. A practical acceptance plan reduces unnecessary tooling cost and later disagreements.

5. Separate prototype, launch and annual quantities

Provide the sample quantity, first production order and estimated annual demand. These figures help the supplier evaluate tooling approach, cavity count, production method, packaging and capacity. If demand is uncertain, provide realistic ranges rather than an unsupported forecast.

6. Include branding and packaging

Specify molded logos, printed marks, Pantone colors, labels, barcodes, individual bags, retail boxes, master cartons and any packaging tests. Send editable artwork when possible. Packaging can materially affect unit cost, lead time and minimum order quantity, so it should not be treated as an afterthought.

7. State destination and schedule

Include the destination country, desired Incoterm if known, target sample date and required production date. The destination market can affect documentation, labeling and logistics assumptions. Ask the quotation to separate tooling, samples, unit pricing, packaging and freight where practical.

8. Request a review of open questions

End the RFQ with a list of unresolved items and ask the supplier to state assumptions, exclusions and recommended changes. A useful quotation should make the technical and commercial basis visible instead of hiding uncertainty inside one unit price.

For a project-specific review, send your files, quantities and destination through the request-a-quote form. The information can then be organized into tooling, sample and production steps.