Precision Sealing
Solutions

Manufacturer of high-performance oil seals, O-rings, and custom OEM parts since 2004. Trusted by industrial leaders across 30+ countries.

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20+ Years Experience

Serving global clients with reliable sealing solutions since 2004.

Global Reach

Exported to over 30 countries with consistent quality assurance.

ISO Standards

Compliant manufacturing processes ensuring product reliability.

About MaiRun Oil Seal

Founded in 2004, MaiRun Oil Seal Factory is a professional manufacturer specializing in the production of oil seals, O-rings, plastic gaskets, and OEM parts. With over two decades of experience, we have built a reputation for delivering high-quality sealing solutions to industries worldwide.

Our commitment to excellence drives every aspect of our operation — from material selection and precision engineering to rigorous quality control and customer service. We serve automotive, aerospace, industrial machinery, and energy sectors with products that meet international standards.

High-quality is our obligation

Customer-first approach

Great service is our mission

Continuous innovation & improvement

Our Products

We manufacture a wide range of sealing components designed for durability, performance, and reliability under extreme conditions.

NBR TC Oil Seal

Nitrile rubber double lip seal for shaft protection in industrial and automotive applications.

Material: NBR Inquire

FKM TC Oil Seal

High-temperature resistant fluorocarbon rubber seal ideal for aggressive environments.

Material: FKM (Viton®) Inquire

NBR O Ring

Standard nitrile O-rings for static and dynamic sealing in hydraulic and pneumatic systems.

Durometer: 70±5 Shore A Inquire

FKM O Ring

High-performance Viton® O-rings for extreme temperatures and chemical resistance.

Temp Range: -20°C to +200°C Inquire

Silicone O Ring

Flexible silicone seals for food-grade, medical, and high-purity applications.

FDA Compliant Available Inquire

End Cover

Precision-engineered metal end covers for housings and enclosures.

Custom Sizes & Finishes Inquire

Custom Oil Seals

Tailored sealing solutions based on your drawings, samples, or specifications.

OEM/ODM Supported Inquire

Plastic Gaskets

Injection-molded plastic gaskets for lightweight, corrosion-resistant sealing.

Materials: POM, PP, PE, etc. Inquire

Our Services

From design support to mass production, we offer comprehensive services to meet your sealing needs.

Engineering Design Support

Our technical team provides CAD modeling, material selection, and design validation for optimal seal performance.

Custom Tooling & Molding

We develop custom molds and tooling for unique sealing applications with fast turnaround times.

Quality Assurance

Every product undergoes strict inspection including dimensional checks, hardness testing, and visual examination.

Logistics & Packaging

Secure packaging and efficient global shipping options including air, sea, and express delivery.

After-Sales Support

Dedicated customer service team available for technical queries, order tracking, and feedback.

OEM/ODM Services

Full-service manufacturing for private label and original design projects with NDA protection.

Why Choose Us

Uncompromising Quality

We treat high quality as our obligation. Every product is manufactured under strict ISO protocols and tested rigorously before shipment.

Customer-First Approach

Your satisfaction is our priority. We respond promptly, listen carefully, and deliver exactly what you need.

Fast Turnaround

From inquiry to delivery, we streamline processes to offer competitive lead times without sacrificing quality.

Advanced Manufacturing

State-of-the-art injection molding, cutting, and assembly lines ensure precision and consistency across batches.

Global Supply Chain

Established logistics network enables reliable delivery to North America, Europe, Asia, and beyond.

Innovation Driven

We continuously invest in R&D to improve materials, designs, and manufacturing techniques for better performance.

Frequently Asked Questions

What materials do you offer for oil seals?

We offer NBR (nitrile), FKM (Viton®), silicone, EPDM, and other specialty elastomers depending on temperature, chemical exposure, and application requirements.

Can you manufacture custom-sized seals?

Yes, we specialize in OEM/ODM production. Provide us with your drawings, samples, or specifications and we’ll produce exact matches.

What is your minimum order quantity (MOQ)?

Our MOQ varies by product type and customization level. For standard items, MOQ can be as low as 100 pieces. Contact us for specific quotes.

Do you provide samples?

Yes, we offer free samples for qualified customers. Shipping may apply depending on destination and quantity.

Are your products compliant with international standards?

Yes, our manufacturing processes follow ISO standards. We can also comply with ROHS, FDA, and other regulatory requirements upon request.

Get in Touch

Ready to discuss your sealing needs? Reach out to our team for expert guidance and competitive pricing.

Email

rebecca@mroilseals.com

Location

No.23 Fengbao Road, District Fengtai, Beijing, China

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Precision Sealing Solutions