HVAC Industry
Custom molded and extruded rubber and plastic parts for heating, ventilation and air conditioning equipment – built to your print, or designed with you.
Rubber and plastic applications in HVAC equipment
COi Rubber manufactures custom molded and extruded rubber and plastic parts for the HVAC industry – seals, gaskets, tubing and vibration control products for heating, ventilation and air conditioning equipment. We make it our business to learn your business – providing application, material and assembly assistance – and build to your print, or help design the part from the requirement up.
Below are common rubber and plastic applications our customers source in this industry, and the materials we mold for them. These are engineering considerations, not guarantees of suitability – final selection depends on your drawing, operating environment and testing. Send a drawing or a sample part and we will match the compound, durometer and process to the application.
Applications:
- Damper blade seals (rubber) – TPV and EPDM seals that close dampers off against air leakage.
- Access door and screw-cover gaskets (rubber) – panel and door gaskets that keep air and moisture where they belong.
- Condensate and drain tubing (rubber) – formed tubing, including directional-flow designs with engineered bends that move moisture where you want it.
- Duct and pipe seals (rubber) – extruded profiles that can be spliced endless to make pipe seals.
- Weather-stripping and edge guards (rubber) – profiles that seal cabinets and protect sheet-metal edges.
- Vibration and thermal-break pads (rubber) – anti-vibration pads, mounts and thermal-break gaskets for compressors, fans and air handlers.
- Dual-durometer extrusions (rubber) – a rigid mounting leg with a soft sealing lip in one part, so the seal installs fast and stays put.
Materials:
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Have a question? Use our contact form to receive information regarding your inquiry. You may also give us a call at (626) 965-9966.
Materials and your RFQ
Air leaks and condensate failures cost HVAC makers in energy and warranty claims, so the compound matters. Whether a material fits your part depends on your requirements and the specific formulation – buyers commonly ask about TPV for damper seals and gaskets where flexibility across temperature extremes is a concern, EPDM where weather and condensate exposure are concerns, polychloroprene (CR) where oil and ozone exposure are concerns, and silicone where temperatures run high. These are starting points for discussion, not guarantees of suitability.
When you request a part, tell us the airflow, temperature range and fit, and include the drawing or a sample part. We match the compound and durometer to that.
Design considerations for HVAC equipment
The right compound depends on the conditions the part will live in. The points below shape material and geometry choices for HVAC applications:
- Air sealing. Damper and door seals set leakage rates; profile and compression follow the gap and the closure force.
- Temperature extremes. Parts see hot and cold cycling; compound choice follows the actual range so seals stay flexible in service.
- Condensate management. Drain and condensate paths need compounds that tolerate constant moisture; formed tubing with engineered bends moves moisture where you want it.
- Vibration and noise. Compressors and fans shake; pads and mounts trade damping against stability, sized from the load and the frequencies involved.
- Ozone and weather. Rooftop and outdoor units expose parts to ozone and weather; compound selection follows the exposure.
Molding and extrusion for HVAC equipment
We match the process to the part and the volume:
- Rubber extrusion – solid and sponge profiles for damper seals, gaskets, weather-stripping and edge guards, including dual-durometer designs that combine a rigid mounting leg with a soft sealing lip; profiles can be spliced endless for pipe seals.
- Rubber molding – compression, transfer and injection molding for grommets, mounts, pads and formed parts, from prototype quantities through production runs.
- Formed tubing – condensate and drain tubing with engineered bends to fit the unit layout.
Send a drawing or a sample part and we will recommend the profile, compound and process.
From prototype to production
Every new part goes through first article inspection or a Level 1 PPAP (Production Part Approval Process) before production – Level 3 for automotive, Level 4 for higher-requirement projects. We provide material certifications verified in our own lab against your material requirements, plus a dimensional layout, a bubble blueprint and a signed first article form. Level 3 goes into full industry-standard PPAP documentation depth: design records, process flow, PFMEA, control plan, MSA, capability studies (CPK) and the Part Submission Warrant (PSW). Higher-requirement projects can run customer-defined Level 4 submissions where specified. Our manufacturing facility is IATF 16949 certified, with APQP and 5-Why and fishbone root-cause analysis built into our quality process. Once a part is approved, we hold the compound, durometer and tooling consistent so reorders match the approved part.
What to include in your RFQ
A complete RFQ gets a faster, more accurate quote. Include what you can from this list:
- Drawing or sample part (2D or 3D files welcome)
- Prototype and annual quantities
- Operating environment: temperature range, media exposure
- Any required standard or rating (for example a flammability rating)
- Tolerance and fit requirements, including mating surfaces
- Target timeline for samples and production
Send these to sales@coirubber.com and we will respond with material and process recommendations.