{"id":1195,"date":"2014-01-09T22:51:28","date_gmt":"2014-01-09T22:51:28","guid":{"rendered":"http:\/\/coirubber.com\/?page_id=1195"},"modified":"2026-11-06T19:11:31","modified_gmt":"2026-11-07T03:11:31","slug":"engineering","status":"publish","type":"page","link":"https:\/\/coirubber.com\/es\/engineering\/","title":{"rendered":"Ingenier\u00eda"},"content":{"rendered":"\t\t
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Engineering <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Engineering Support from Drawing to Production<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

A successful component starts with the right material, geometry and manufacturing process. Our team reviews your application, operating conditions and production requirements to help identify practical options for custom rubber and plastic parts.<\/p>

Work with us on material selection, tolerances, tooling, prototyping and testing.<\/p>

Our RFQ review starts with the 2D drawing, material and durometer. Missing information is clarified before the quote moves forward.<\/p>

Next step:<\/strong> see rubber molding<\/a> and extrusion<\/a> for processes, material technology<\/a> for materials, and the quote guide<\/a>. Ready to start? Request a quote<\/a> or send a drawing<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tDiscuss Your Engineering Requirements<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t
\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Materials, Tooling and Testing Expertise<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Our engineering team brings together knowledge of elastomers, plastics, mold design and manufacturing processes. We evaluate part designs for performance and manufacturability, with experience in molded hoses, shaft seals and vibration-control components.<\/p>

Prototyping and testing help evaluate the design against your requirements before production.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tExplore Our Manufacturing Processes<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Ask DAAV: rubber and plastics engineering basics<\/h2>

These short examples were answered by DAAV, COi’s AI assistant, and checked against public engineering references. They are general information, not a material specification, design approval or performance guarantee. Final choices depend on your application and review by the engineering team.<\/p>

What is compression set?<\/h3>

General information: Compression set is the permanent deformation a rubber part keeps after it is squeezed for a set time at a set temperature and then released, usually reported as a percentage of the original deflection.<\/p>

What does Shore A durometer measure?<\/h3>

General information: Shore A durometer measures the resistance of a rubber surface to indentation by a spring-loaded pin, which is how the hardness reading is produced.<\/p>

Why does the exact fluid and temperature matter when choosing rubber?<\/h3>

General information: The exact fluid and temperature matter because rubber compounds swell, harden, soften, or degrade differently depending on the chemical and the heat they are exposed to, so a compound that works in one fluid at one temperature may fail in another.<\/p>

What is a parting line on a molded rubber part?<\/h3>

General information: A parting line is the seam or witness line left on a molded rubber part where the two halves of the mold meet, and it is often a small raised ridge of flash that may need trimming.<\/p>

Why should critical dimensions be identified on a molded rubber drawing?<\/h3>

General information: Critical dimensions should be identified on a molded rubber drawing so the manufacturer knows which features affect fit or function and must be controlled most closely, since rubber is flexible and shrinks or varies during molding, which makes clear priorities essential for quoting and inspection.<\/p>

How does a thermoplastic elastomer differ from a thermoset rubber?<\/h3>

General information: A thermoplastic elastomer softens when heated and can be remelted and reprocessed, while a thermoset rubber forms permanent crosslinks during curing and cannot be remelted once set.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

How Our Engineering Team Works With You<\/h2>\n

COi Rubber has over 23 years of experience in engineering, design, compounding, prototyping and production of molded rubber and plastic parts. Our Product Design and Engineering team combines mechanical engineering with knowledge of rubber and plastic materials, mold making and testing. We start at the design stage, so the part you draw can also be made well.<\/p>\n\n

Design for manufacturability<\/h3>\n

We review your drawing for performance and for how it will be molded. We check that the part can meet real-world demands, and we make drawings that work with your systems. The team has specialist experience in molded hoses, shaft seals, surfacing products and vibration-control products. See our rubber product design guidelines<\/a>, tolerance factors for molded rubber<\/a> and how tight a tolerance you really need<\/a>. Our RMA tolerance tables<\/a> are available to review.<\/p>\n\n

Material selection and compounding<\/h3>\n

We help you choose rubber and plastic materials based on the physical, chemical and thermal needs of the application. Materials we work with include natural rubber, SBR, EPDM, neoprene, NBR and thermoplastic elastomers (TPE, TPV, TPU). We mix our compounds in house and test them in our in-house lab. Learn more on our material technology<\/a> page, in our durometer guide<\/a> and in our ASTM rubber guidelines<\/a>.<\/p>\n\n

Rapid tooling and prototyping<\/h3>\n

Once the design is ready, our rapid tooling team can produce prototype parts and sample one-off tooling. Rapid tooling is done in China, with a typical lead time of 15 days.<\/p>\n\n

Molding processes<\/h3>\n