Zhongsheng, a model of high-quality seals

One-stop seal manufacturer you can rely on

Custom Drawing Process Materials About Us Cases Advantages FAQ

From prototype development to mass production. Upload your 2D/3D drawings and receive a professional feasibility review and quotation within 24 hours.

Custom Process

We know time matters. Our optimized workflow quickly turns drawings into finished parts and makes customization simple.

Submit Drawings and Requirements

Upload your drawings and specify temperature, pressure, media and movement speed.

DFM Review and Fast Quote

Our engineers analyze manufacturability, optimize the design and provide a formal quote within 24 hours.

Tooling and Rapid Sampling

Samples are made by molding or CNC no-tool cutting according to the order requirements.

Precision Mass Production

ISO 9001 quality management and automated production lines support efficient, precise manufacturing.

100% Inspection and Shipment

We inspect with optical projectors and hardness testers, provide reports and pack products safely.

Material Selection

Multiple materials available

Key advantages: Cost-effective | Excellent oil resistance | Versatile

Best applications: General dynamic and static seals, O-rings and standard oil seals.

Technical highlights: Reliable and economical sealing for petroleum hydraulic oil, water and grease at standard operating temperatures.

Excellence comes from focus on every detail

Julu Zhongsheng Rubber & Plastic Products Co., Ltd. is a modern enterprise engaged in the R&D, production and sales of customized rubber and plastic products. Over the years, we have adhered to innovation, truth-seeking and pragmatism, stable quality and continuous progress. With high-precision equipment, scientific raw material formulas and strict management systems, we develop and produce customized products to meet market needs. Backed by rich mold development experience, we design and manufacture molds and specialize in producing a wide range of rubber products.

3000+Served Companies

20+Years Experience

5000+Ready Specs

30+Export Countries

Excellence comes from focus on every detail

15803192937 info@zhongshengsealing.com

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Full-category seals, one-stop purchasing

Product Cases

Stern tube oil seal

Spring-energized seal

Stainless steel oil seal

Fan oil seal

VA

RBR Rolling Mill Oil Seal

Type K

Type J oil seal without metal casing

Split oil seal

Fan oil seal

Z-type

JF Fabric-Reinforced Oil Seal

Our Core Advantages

Why choose us?

01/ 04

Physical Manufacturing Factory

We own modern automated rubber and plastic production workshops and a strict quality inspection system. Direct supply from the original factory ensures precise control over every procedure from raw materials to finished goods. We deliver highly competitive prices, visible production progress and high-standard supply guarantee for you.

02/ 04

One-stop Service

We carry a full range of rubber and plastic products, covering standard O-rings, skeleton oil seals and high-difficulty spring energized seals. Our one-stop solution fulfills your full-cycle sealing demands including technical selection, mold development and mass production, greatly cutting procurement time across multiple channels and supply chain management costs.

03/ 04

High-End Customization

We specialize in custom non-standard seals and seals for special working conditions. Our engineering team provides full-process technical support. We accurately adjust material formulas and structural designs to meet extreme requirements of temperature resistance, corrosion resistance and pressure resistance, produce samples rapidly, and fully comply with your strict industrial application standards.

04/ 04

Massive Inventory

For urgent or small-batch orders, CNC no-tool cutting starts from one piece and saves tooling cost.

Applications

Suitable for many industries and scenarios

Used in different industries

Used in large machinery

FAQ

Clear answers to common questions.

What is the payment term?

We accept T/T 30% deposit and balance 70% against current sight B/L or L/C.

What is the standard delivery time for product orders?

The average delivery time is 1–2 weeks. If mold production is involved, the lead time for the mold is 10 days, and the average production time after sample approval is 1–2 weeks.

What is your standard packaging?

All goods will be packed in PE bags and then placed in cartons with appropriate padding. Special packaging methods are available upon request but may incur additional costs.

How do you check the quality of bulk orders?

Our inspection procedures include initial inspection, spot checks, preliminary inspection, comprehensive inspection, and pre-shipment inspection.

How to Select the Right Rubber Material Based on the Application

Drawing on extensive experience working with a wide range of materials, we can assist you in selecting the most suitable material for your needs while balancing material costs.

Contact Us

Phone 15803192937

WeChat 15803192937

Whatsapp 8613292128989

Email info@zhongshengsealing.com

Address Wanghuzhai Village Industrial Park, Wanghuzhai Town, Julu County, Xingtai City, Hebei Province

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