In-House Compounding × Latest Materials × Vertical Integration

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With 50+ years of formulation and manufacturing experience (since 1975), CLS Rubber designs compounds in-house and controls procurement end-to-end. We adopt latest-generation elastomers (EPDM, FKM, HNBR, ACM, VMQ, CR, NBR, etc.) with full batch traceability. Our fully vertical process—compound design → mixing → extrusion/braiding/molding/injection → post-curing/finishing → inspection → packing—runs under an IATF 16949 quality system to ensure consistency, faster development cycles, and competitive cost.

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Comprehensive Lab & Certified Test Engineers

Our materials and product validation lab is operated by internally qualified and externally trained test engineers. Key capabilities include:

• Material/compound: Mooney viscometer, rheometer, carbon-black dispersion, FT-IR, TGA, specific gravity, Micro IRHD hardness

• Environmental durability: ozone & heat aging, low-temperature brittleness, flammability, salt-spray, fuel/oil immersion

• Mechanical/functional: tensile & tear, abrasion, flex-crack, compression set, vibration & endurance, pressure/leak/burst

• Dimensional/appearance: 3D CMM, 2.5D optical measurement, visual/OQC with documented acceptance criteria​  

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We translate ASTM/SAE/ISO call-outs (e.g., ASTM D2000 grade and suffix requirements) into material test plans, control charts, and validation protocols. For mass production, we support APQP/PPAP, CP/CPK capability studies, and full traceability reporting to meet global OEM audits.

Application-Driven Engineering

For automotive, motorcycle/scooter, recreational vehicles (ATV/UTV/snowmobile/watercraft), agricultural machinery, and industrial equipment, we tailor compounds and designs to service temperature windows, media exposure (fuel/oil/coolant), weather/ozone resistance, pressure, and NVH targets. We also provide RoHS/REACH compliance, raw-material CoC, batch CoA, and barcode traceability to streamline multi-site, cross-border supply chains.