Company - frequently asked questions
King Rubber is a custom manufacturer that also provides sales expertise.
We do not offer a catalog because each product is custom-ordered to client specification.
Please send your inquiry and drawings to email@example.com or visit our website "Quotation" under the Parts tab.
We offer customized moldings, extrusions, die-cutting and lathe-cutting rubber parts, as well as plastic products.
We currently work with hundreds of companies and our products can be used in many industries requiring rubber and plastic customization, such as in HVAC systems, home appliances, heavy equipment, power-tool machineries, secondary-vehicles, automobiles, construction projects, public transportation, elevator doors and electrical safety equipment.
King Rubber retains ownership of the referenced tool.
*If you want to acquire ownership of the tool, we can provide the 100% cost of the tool in the quotation.
Please provide the estimated annual-usage, material specifications and drawings or descriptions of the rubber parts.
The Tooling and Sample Delivery process will take 4-6 weeks, as the customized tool must be produced first. Then during tool production, we may have to design a new tool or adjust the existing tool to reach the exact specification. Once the tool is completed, we will manufacture a sample and send to you for approval, along with product documentation.
Our company’s ISO-certification has been in effect since 1998. King Rubber is an ISO 9001:2015 certified company.
Our company currently offers customized rubber-metal bonded parts from smaller to larger sizes, ranging from less than 1-inch in diameter - to over 1-foot in total length.
Yes, in some cases, our company can use your existing tools based on several factors: including mold type, size and age. Please discuss with your King Rubber representative for the possibility.
Since most of our custom rubber parts are made with the customer's own tools, we do not normally act as an inventory company. However, we do have some parts that can be used more frequently and we may have stock such as plugs, buttonholes and some pipes. We can also store parts according to your needs, which we currently supply to many customers. We will ship the goods according to your schedule.
Our company will send you a quotation for plastic products in 5 - 7 business days. The quotation for extruded rubber or die-cut parts will be in 3 - 5 business days.
The delivery time for molds and samples is usually 4 to 6 weeks for extruded samples and 6 to 8 weeks for molds and samples.
Production parts are based on sample approval. For extrusion/die-cutting production, the delivery cycle is about 4 to 5 weeks, and the molding parts production is about 5 to 6 weeks.
Yes, we do PPAP. This information should be communicated to King Rubber when submitting a request for a quote and any other relevant information (i.e., testing) related to the shape/fit/function of the part.
Yes, we use sponge rubber, extruded and molded.
Yes, we manufacture and produce plastic products: extruded and molded.
Yes, our experienced team of experts can guide you to determine the right type of rubber or polymer, depending on the application and environment your parts will be exposed to.
Yes, in many cases.
You can waive the right to sample approval, but in the process you also waive the subsequent right to change or correct the parts prior to actual production.
Yes, we provide light assembly on both parts and packaging.
Yes. The cost of the tool can be spread over the price of a single piece.
The limits of a durometer depend on the type of rubber you need:
Extrusion unit - 40 hardness tester
Molded part - 30 hardness tester
Hardness tester limits depend on the type of rubber part you need:
Extrusion unit - 80 hardness tester
Molded part - 90 hardness tester
Yes, there is a blue label on each batch. The batch number traces the material back to the raw material supplier.
Yes, our company goal is to reduce the quality cost to less than 2%.
Our company retains quality records for three years.
King Rubber is focused on meeting your most demanding custom specifications, while ensuring the highest quality product assurance, customer service and on-time delivery, with the most competitive pricing.
Yes, we provide written procedures and forms for all continuous improvement projects.We deploy continuous improvement throughout the organization. Encourage everyone to come up with ideas for improving products, processes, systems, productivity, and work environments. Techniques include control charts, constraint theory, PPM analysis, FMEA, value analysis, etc. (????????)
Yes, the staff conducts a quarterly audit and reviews the training results at that time.We keep training records electronically. Cross-train as needed and require full-time employees to receive at least 20 hours of training per year.
Yes, we put the parts in the holding area and marked them red according to our procedure.