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Manufacturer of high-performance mechanical face seals, oil seals, O-rings, piston & rod seals, wipers, guide rings, and custom sealing kits. Trusted by global industries since 2010.
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Any Design, Any Material
Welcome to Shaanxi Yimai Trading Co., Ltd., a leading technology company specializing in sealing products. Our predecessor, Shaanxi Baorun Electromechanical Technology Company, was founded in 2010, giving us over 13 years of experience in the sealing industry.
We began with simple O-ring production and have evolved into a full-service provider capable of manufacturing or customizing all types of sealing solutions — from mechanical face seals and skeleton oil seals to hydraulic, pneumatic, and static seals.
With a spirit of innovation and continuous improvement, we maintain product stability and reliability across diverse industrial applications worldwide.
Why customers trust Yimai Sealing for their critical sealing needs
We design and process sealing parts according to customer drawings. With over a decade of experience, we deliver non-standard, custom-sized, and material-specific sealing solutions.
Strict quality control systems and professional testing procedures ensure compliance with international standards such as ISO 3320 and other national requirements.
"Customer first" is our service tenet. We help you find the best sealing solution for every application and concern, ensuring fast response and reliable support.
Engineered for performance, durability, and precision across industries
Designed for extremely harsh environments. Includes DO and DF (Biconical) types for reliable performance under high pressure and temperature.
Includes TC, TCV, TA, TB, SB, SA, and SC types. Made from rubber, metal frame, and spring for tight sealing.
High-quality O-rings used as sealing or energizing elements in hydraulic systems and slipper seals.
Includes B7, CST, DAS (double-acting), EK, M2 (reciprocating), and OE types for hydraulic cylinders.
Axial preload (ES), single-acting (M1), U-ring (B3, BA), and servo system (OD) types.
A1, AD, AS (standard dust seal), AY (double lip), and A5 (axial) types.
Piston (KB, KF) and rod (SB, SF) guide rings for alignment and wear protection.
HXW (piston), HXN (rod), V-ring VA/VS (V-shaped) for rotating shafts.
EL, EM, DP (double U-shaped), and Z8 (lip seals) for pneumatic systems.
Back-up rings, X-rings, and radial static seals for non-moving joints.
Full customization: any size, form, quantity, and material — including polyurethane, rubber, nylon, POM, PTFE.
High heat resistance: long-term use at 200–250°C, short-term up to 300°C.
Get answers to common inquiries about our sealing products
We use high-quality materials including NBR, FPM (fluorine rubber), polyurethane, rubber, nylon, polyformaldehyde (POM), and tetrafluoroethylene (PTFE), depending on application requirements.
Yes, we specialize in custom sealing solutions. Send us your drawings or specifications, and we’ll produce seals to your exact requirements.
Our seals are used in hydraulic systems, pneumatic equipment, machine tools, automotive, aerospace, oil & gas, and industrial machinery.
Yes, we can provide samples for evaluation upon request. Contact us for details.
We adhere to ISO 3320 and other national quality standards, with strict in-house testing and quality control procedures.
Have questions or need a quote? Reach out to our team for expert sealing solutions.
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