Vehicle-specific fit, integrated waterproof/sound insulation/sealing, high/low temp & UV resistance, wear/scratch proof, close fit, improves comfort & sealing, supports OEM batch supply & after-sales replacement.
Temp -40~150℃
Hardness 55-70 Shore A
Tensile Strength ≥8MPa
Sealing Grade IP67
Complies with global sealing ring standards.
Meets QC/T 639 and special automotive OEM standards.
Passed IATF 16949 automotive management certification.
Fully meets rigorous automotive industry requirements.
With a fully vertically integrated production system, UPT achieves full-process control from polymer material formulation R&D to finished product certification and delivery.
Our company has successively obtained the three authoritative certifications of IATF 16949 Automotive Quality Management System, ISO 14001 Environmental Management System and ISO 9001 Quality Management System, fully meeting the stringent standards of various industries worldwide, especially those in the automotive sector.
During production of sealing strips, our QC engineers cut cross-sections for 10x magnified checks every 20 minutes. They accurately measure the rubber products’ dimensions, tolerances and geometric errors to ensure they match design drawings and meet customer assembly needs.
We also test the products’ physical and chemical properties per standards to guarantee complete vulcanization and stable performance. Friction and wear tests are carried out to check the abrasion resistance of rubber products and their coatings, while mechanical tests verify the material’s tensile and tear strength.

20-Min Interval Cross-Section Checks

10x Magnification | Precision Guaranteed

Tested for Tensile & Tear Resistance
Spanning approximately 500 square meters, our laboratory is fully equipped with advanced apparatus and boasts strong testing capabilities.We can independently conducting comprehensive testing on a wide range of rubber products。

Ozone Aging Test Chamber

Low Temperature Brittleness Tester

Electronic Tensile Testing Machine

High and Low Temperature Alternating Humidity and Heat Test Chamber

Constant Temperature Water Tank

Aging Test Chamber

Mooney Viscometer

Automotive Seal Strip Abrasion Tester

Automotive Interior Combustion Test Chamber

Fully Automatic Image Measuring Instrument

Rotorless Rheometer / No Rotor Curemeter

Xenon Lamp Weather Resistance Test Chamber





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A: Continuous extrusion vulcanization is the core production process for high-quality rubber strips (automotive/industrial). It realizes one-time forming of rubber strips with fixed cross-sections through continuous feeding → extrusion shaping → online vulcanization → post-processing. The key advantage is that it ensures ultra-high batch consistency of rubber strips (cross-section error ≤±0.1mm), stable physical properties, and supports 24-hour mass production—this is why it’s the first choice for OEM bulk supporting of automotive and industrial rubber parts.
A: For ultra-high temperature scenarios (industrial ovens, engine compartments, high-temperature chemical pipelines), material selection is based on the actual temperature range:
In addition, the rubber strip structure is recommended to use low-compression-deformation design, with appropriate thickness increase and internal heat-insulating filler to further improve high-temperature adaptability.
A: The core physical indicators that directly determine the use effect of rubber strips/seals are 4 key items, with industry standard requirements as follows:
All indicators are tested according to international ISO standards, with strict error control (e.g., hardness error ≤±2 Shore A).
A: Industrial rubber strips are mainly matched by equipment protection requirements + installation structure, the core scheme is:
The key is to ensure the rubber strip is fully compressed during installation (compression rate 20%-30%) to achieve the designed IP grade.
A: The correct installation of rubber strips depends on the installation method, with 3 key points for common types:
After installation, check the fitting degree—ensure full contact with the equipment/body without gaps.