Yokey-Professional Rubber Manufacturing,Environmental Protection&Intelligently Made. Focus on Precision Parts,Service for High-End Manufacturing. (ROHS, REACH, PAHS, FDA, KTW, LFGB)

Company Profile


—— Choose Yokey Choose Rest Assured

Who We Are?What We Do?

Ningbo Yokey Precision Technology Co.,Ltd is located in Ningbo, Zhejiang province, a port city of the Yangtze River Delta. The company is a modernized enterprise specializing in researching &developing, manufacturing, and marketing of rubber seals.

The company is armed with an experienced manufacturing team of international senior engineers and technicians, possessing mold processing centers of high precision and advanced imported test devices for products. We also adopt world-leading seal manufacturing technique in the whole course and choose raw material of high quality from Germany, America and Japan. Products are inspected and tested strictly for more than three times before delivery. Our main products include O-Ring/Rubber Diaphragm&Fiber-Rubber Diaphragm/Oil Seal/Rubber Hose&Strip/Metal&Rubber Vlucanized Parts/PTFE Products/Soft Metal/Other Rubber Products, which are widely used in high-ended manufacturing fields such as new energy automobile,pneumatics, mechatronics,chemical and nuclear energy, medical treatment, water purification.

With excellent technology, steady quality, favorable price, punctual delivery and qualified service, seals in our company gain acceptance and trust from many renowned domestic customers, and win an international market, reaching out to America, Japan, Germany, Russia, India, Brazil and many other countries.

Why Choose us?

1. We posses a development,research,manufacturing and sales team,which can provide our customers professional sealing solutions.

2. We have high-precision mold processing center introduced from Germany.The size tolerance of our products can be controlled in 0.01mm

3.We strictly conduct ISO 9001 quality control system. the products go through all inspection before delivery ,and the pass percent can reach 99.99%.

4.Our raw material all comes from Germany,American and Japan.The elongation and elastic resilience are better than industrial standard.

5.We introduce the international processing technique of advanced level,and constantly improve the automation level to save customers' purchase cost of high-end sealing products.

6.Customized sizes and shapes are available. Welcome to share your idea with us, let’s work together to make better.

Watch Us in Action!

Ningbo Yokey Precision Technology Co.,Ltd has its own mold processing center,rubber mixer, preforming machine, vacuum oil pressing machine, automatic injection machine, automatic edge removal machine, secondary sulfur machine.We have a sealing R & D and manufacturing team from Japan and Taiwan.

Equipped with high precision imported production and testing equipment.

Adopt international leading production and processing technology, production technology from Japan and Germany.

All raw materials imported source, before shipment must go through more than 7 strict inspection and testing, strict control of product quality.

Have a professional sales and after-sales service team, can develop solutions for customers.

Testing Equipment

Hardness Tester

Vulcanzation Tester

Tesile Strength Tester

Micro Measurement Tool

High&Low Temperature Test Chamber


High Precision Solid Densitometer

Balance Scale

High Precision Thermostatic Bath

Digital Thermostatic Water Bath

Electrothermal Constant Temperature Blast Drying Box

Processing Flow

Vulcanization Process

Product Selection

Two Times Vulcanization Process

Inspection and Delivery


IATF16949 report

EP material has passed FDA test report

NBR material passed PAHS report

Silicone material passed LFGB certificate

Exhibition strength

After-Sales Service

Pre-Sales Service

-Inquiry and consulting support 10 year rubber seals technical experience

-One-to-one sales engineer technical service.

-Hot-line of service is available in 24h,responder in 8h

After Service

-Provide technical training equipment evaluation.

-Provide problem solving plan.

-Three years quality guarantee, free technology and support for life.

-Keep all-life contacting with clients,get feedback on use of the product and make the products quality continually perfected.