Buying a replacement rubber bush, seal, gasket or moulded component starts with defining the part correctly. A photograph is useful, but it rarely provides every detail needed to assess a custom component. This practical request-for-quotation (RFQ) checklist helps buyers in Kota Kinabalu, Sabah, Sarawak and Brunei organise an enquiry.

RUBASIA RubberTech Industries lists custom moulded rubber, rubber gaskets, rubber extrusions and other industrial rubber products. Use the checklist below when discussing a requirement with our team. Manufacturing feasibility, material, quantity and delivery arrangements must be confirmed for each enquiry.

1. Identify the rubber part and its application

Tell the supplier what the component does and where it will be used. Is it a sealing part, protective cover, coupling bush, spacer or mounting component? Include the equipment make and model where available, plus a part number or drawing reference.

For a replacement, describe the problem with the existing part: leakage, cracking, swelling, wear or a poor fit. These observations provide useful context, but the cause should be assessed rather than assumed from a photograph.

2. Provide a drawing, dimensions or an existing sample

A dimensioned drawing helps define the geometry. If you do not have one, provide clear photographs from several angles and ask whether a physical sample is needed for assessment. Note that a used component may be worn, stretched or deformed.

• State the measurement unit, such as millimetres.
• Include overall length, width, height or thickness, as relevant.
• Identify internal and external diameters, holes, grooves and mating surfaces.
• State critical tolerances from the equipment drawing where available.
• For a rubber-to-metal component, describe the metal insert and attachment details.

Do not estimate a critical fit from a photograph alone. Ask which dimensions need verification before a quotation or production approval can be completed.

3. Describe operating conditions before choosing a material

Material selection depends on the actual application. If a specified rubber compound or hardness is available, include it in the enquiry. If it is unknown, say so instead of selecting a material only by colour or appearance.

For safety-critical applications: Food-contact, electrical, pressure-system and fire-system requirements need application-specific verification. A generic material name does not establish compliance. Confirm the relevant specification and supporting documentation with the supplier and the responsible engineer before use.

4. Specify quantity, tooling and acceptance requirements

Include the quantity needed for an initial order and the expected repeat demand, if known. Ask whether existing tooling can be used or whether new tooling is required. Where applicable, request separate clarification of tooling charges, sample arrangements and production pricing.

Agree how the part will be accepted: drawing approval, sample approval, dimensional inspection or another specified check. Do not assume that a quoted component includes testing or certification unless it is explicitly included.

5. Confirm delivery details for Sabah, Sarawak or Brunei

Provide the delivery town, postcode and required date. For example, an enquiry for Kota Kinabalu, Sandakan, Tawau, Kuching or Miri should identify the actual delivery destination. For Brunei, clarify the delivery scope and any cross-border documentation required.

Ask the supplier to confirm stock or production status, estimated lead time, freight and any separate charges. Treat a required date as a request until the delivery schedule has been agreed.

Copy-and-send custom rubber parts enquiry checklist

Frequently asked questions

Can I enquire without a technical drawing?

Yes. Start with photographs, available measurements and a description of the application. The supplier will need to confirm whether a sample, drawing or further information is required before feasibility and pricing can be finalised.

Can a supplier identify the rubber material from its colour?

Colour alone is not a reliable material specification. Provide the original specification or material records where available, and describe the service conditions if the material is unknown.

Is there a standard MOQ or lead time for custom rubber parts?

There is no single figure that applies to every custom part. Geometry, material, tooling, order quantity and production arrangements can affect the quotation. Ask for the minimum order quantity and lead time for your specific enquiry.

How do I contact RUBASIA about a custom rubber component?

Use the RUBASIA contact page to submit your enquiry and available attachments. Include your delivery location so our team can discuss the relevant supply arrangements.

Published 28 September 2026. This article is a general procurement checklist, not a product specification or engineering approval. Product availability and technical requirements are subject to confirmation. Cover image: AI-generated concept illustration; not a photograph of actual stock.