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    Weizhong Company adheres to the business philosophy of "Quality First, Customer Supreme, Honest and Trustworthy, and Active Innovation".

Industrial equipment seals
We specialize in high-quality EPDM rubber gaskets, designed to withstand the challenges of sealing in water, oil, steam, and harsh weather environments. With excellent aging, ozone, and temperature resistance (-50°C to +150°C), this product is an ideal choice for sealing water and fuel tanks in automobiles, construction machinery, water storage systems, and industrial equipment, providing reliable, long-lasting leak prevention.
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EPDM Rubber Seal, Automotive Radiator Gasket & Industrial Tank Seal


Product Description

We specialize in high-quality EPDM rubber gaskets, designed to withstand the challenges of sealing in water, oil, steam, and harsh weather environments. With excellent aging, ozone, and temperature resistance (-50°C to +150°C), this product is an ideal choice for sealing water and fuel tanks in automobiles, construction machinery, water storage systems, and industrial equipment, providing reliable, long-lasting leak prevention.


Technical Specifications

Category

Parameter

Standard Value / Description

Material & Physical

Primary Material

Ethylene Propylene Diene Monomer (EPDM)


Specific Gravity

1.10 - 1.30 g/cm³


Hardness (Shore A)

50 ±5, 60 ±5, 70 ±5, 80 ±5 (Customizable)


Tensile Strength

≥ 12 MPa


Elongation at Break

≥ 300%

Temperature & Weathering

Operating Temperature Range

-50°C to +150°C (-58°F to +302°F)


Continuous Service Temperature

Up to +125°C


Weather & Ozone Resistance

Excellent - No cracking under prolonged exposure.

Fluid & Chemical Resistance

Water / Coolant / Steam

Excellent - Minimal swell, ideal for water tanks and radiators.


Oils & Fuels (Diesel, Lubricants)

Good to Fair - Suitable for fuel tank covers and lubricant applications. Not recommended for gasoline.


Acids & Alkalis (Diluted)

Good - Resistant to weak acids and alkalis.

Compression & Sealing

Compression Set (22 hrs @ 100°C)

≤ 25%


Compression Stress Relaxation

Low - Maintains sealing force over long periods.

Flammability & Compliance

Flammability Rating

HB


Color

Black (Standard), Custom colors available


Compliance & Certifications

RoHS Compliant, REACH SVHC Compliant, ISO 9001:2015



Key Benefits

· Extreme Weather and Aging Resistance: Excellent resistance to UV and ozone, maintaining elasticity and sealing properties even after long-term outdoor exposure, with a service life far exceeding that of ordinary rubber.

· Excellent Temperature Resistance: Resists brittleness at temperatures as low as -50°C and softens at temperatures as high as +150°C, ensuring stable performance in extreme temperature fluctuations.

· Excellent Water and Oil Resistance: Excellent resistance to media such as water, coolants, lubricants, and diesel, with no swelling or deformation. Excellent compression set: Maintains long-term resilience, provides consistent and stable sealing pressure, and prevents leaks caused by gasket loosening.

· Environmentally friendly and durable: Complies with ROHS and other environmental directives, is non-toxic and odorless, and provides safe protection for equipment and the environment.


Main Applications

Widely used in various applications requiring reliable sealing:

· Automotive: Engine water chamber gaskets, transmission oil cover gaskets, and radiator tank gaskets.

· Heavy Machinery: Radiator and hydraulic oil tank seals for construction machinery and agricultural equipment.

· Water Storage Systems: Sealing for domestic and commercial water tanks, water heaters, and filters.

· Industrial Equipment: Flange seals for pumps, compressors, and heat exchangers.


Why Choose Us?

1. Professional Formula and Process: Our proven EPDM compound formula and precision molding and cutting processes ensure precise dimensions and consistent performance for each gasket.

2. Customized Solutions: We offer custom designs/samples and can produce to your exact size, shape, hardness, and color requirements. 3. Strict Quality Control: From raw material storage to finished product shipment, we implement comprehensive quality control to ensure zero defects.

4. Competitive Pricing: Large-scale production and efficient supply chain management enable us to provide you with highly cost-effective products.

5. Global Export Experience: Our products are exported to Europe, America, Japan, South Korea, and Southeast Asian markets, and we are familiar with international quality standards and logistics requirements.


Contact us for free samples and a quote.

We firmly believe that quality speaks for itself.

Welcome to request free samples for field testing and experience the superior performance of our EPDM gaskets firsthand. Please provide us with your specific drawings or technical requirements, and our sales and technical teams will assist you promptly.

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