Precision Hydraulic Seals
Engineered to Last

Qingdao Ruichen Sealing Technology Co., Ltd. is a leading Chinese manufacturer of high-performance sealing materials and parts since 2009. Specializing in polyurethane, rubber, engineering plastics, and custom sealing solutions for hydraulic, industrial, and chemical applications.

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About Ruichen Sealing

A trusted name in high-performance sealing solutions since 2009.

Qingdao Ruichen Sealing Technology Co., Ltd.

Established in 2009 and located in the beautiful coastal city of Qingdao, Ruichen Sealing is a professional manufacturer of hydraulic seals. The company operates two subsidiaries dedicated to the research, development, and production of high-performance elastomer sealing materials and engineering plastics for sealing applications.

As an ISO 9001 and ISO 14001 certified manufacturer, Ruichen Sealing delivers precision-engineered sealing solutions trusted by leading industrial companies worldwide. Our focus on innovation, quality control, and material science ensures reliability in the most demanding environments.

ISO 9001 & ISO 14001 Certified
15+ Years of Industry Experience
R&D Focused on Material Innovation
Global Sales Network

Advanced Sealing Materials

Engineered for performance, durability, and resistance in extreme conditions.

RC-PU Polyurethane

High-pressure and wear-resistant material ideal for U-rings and dynamic seals in mineral oil environments.

Media: Mineral oil
Properties: High tensile strength, abrasion resistance
Applications: Hydraulic cylinders, heavy machinery

RC-PU-H Water-Resistant PU

Hydrolysis-resistant polyurethane designed for water-glycol media in metallurgy and industrial systems.

Media: Water-glycol, aqueous solutions
Properties: Resists hydrolysis, maintains elasticity
Applications: Steel mills, fire-resistant hydraulics

RC-NBR Nitrile Rubber

Standard elastomer for O-rings and static seals with excellent oil resistance and compression set.

Media: Mineral oils, greases
Temp Range: -30°C to +100°C
Applications: General hydraulics, pneumatics

RC-FKM Fluororubber

High-temperature and chemically resistant rubber for aggressive environments.

Media: Fuels, acids, oils
Temp Range: -20°C to +200°C
Applications: Automotive, aerospace, chemical

PTFE1 Pure Tetrafluoroethylene

Chemically inert material with excellent non-stick properties, suitable for food and pharmaceutical industries.

Media: Acids, solvents, food-grade fluids
Properties: Low friction, non-toxic
Applications: Food processing, lab equipment

PTFE-2 Filled Composite

Reinforced PTFE with glass fiber and molybdenum disulfide for enhanced compressive strength and wear resistance.

Additives: Glass fiber, MoS₂
Properties: High load capacity, low creep
Applications: High-pressure seals, rotary joints

Premium Sealing Parts

Precision-engineered components for hydraulic, rotary, and high-pressure systems.

Turning Seals

Designed for reciprocating motion in hydraulic cylinders. Excellent wear resistance and low friction.

High Pressure Seals

Engineered for systems exceeding 500 bar. Utilizes reinforced PTFE and polyurethane composites.

Hydraulic Seals

Complete sealing solutions for hydraulic cylinders, including piston and rod seals.

Piston Rod Seals

Prevent leakage along the piston rod. Compatible with RC-PU and RC-FKM materials.

Dust Seals

Protect hydraulic systems from contaminants. Double-lip design for enhanced protection.

Piston Bore Seals

Installed in the cylinder bore to seal the piston. High extrusion resistance.

Rotary Shaft Lip Seals

Prevent leakage in rotating equipment. Compatible with oil and grease lubricants.

Spring Energized Seals

Maintain sealing force under low pressure or vacuum. Ideal for dynamic and static applications.

Why Choose Ruichen Sealing?

ISO Certified

Compliant with ISO 9001 and ISO 14001 standards for quality and environmental management.

R&D Driven

Continuous innovation in material science and sealing technology.

Global Reach

Distributed in over 50 countries with a growing international sales network.

Industrial Grade

Designed for heavy-duty applications in metallurgy, construction, and chemical industries.

Frequently Asked Questions

What materials do you manufacture?

We produce polyurethane (RC-PU, RC-PU-H), rubber (RC-NBR, RC-FKM), and engineering plastics (PTFE1, PTFE-2) for sealing applications.

Are your products ISO certified?

Yes, Ruichen Sealing is certified under ISO 9001 (Quality Management) and ISO 14001 (Environmental Management).

What industries do you serve?

Our seals are used in hydraulic systems, metallurgy, chemical processing, food and pharmaceutical equipment, and heavy machinery.

Can you customize sealing solutions?

Yes, we offer custom material formulations and seal designs based on specific pressure, temperature, and media requirements.

Get in Touch

For inquiries, technical support, or partnership opportunities, visit our official website to contact the Ruichen Sealing team directly.

Phone

+86-532-82809839

info.sealing@ruichenseal.com

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Precision Hydraulic Seals Engineered to Last