Sealing Flat Head Screws | Leak-Proof & Flush-Mount Fasteners

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Sealing Flat Head Screws | Flush-Mount Fasteners with Integrated Watertight Seal

Sealing Flat Head Screws | Flush-Mount Fasteners with Integrated Watertight Seal

Achieve a flush, aerodynamic finish with a reliable seal. Our sealing flat head screws feature integrated O-rings for a watertight, dust-proof barrier in countersunk holes. Browse materials.
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Advantages of

Reliable Delivery At Both Locations

Dual-base large-scale manufacture The dual bases cover a total production area of 20,000 square meters for efficient mass production and delivery. Full-chain quality control system Completely certified and completely tested, constant quality, compliance, and meeting standards.

Non-Standard Customized Fasteners

Full coverage of all types of products Screws, washers, nuts, precision parts for many industries. ​ Non-standard customized and technological obstacles overcome. With 30 years of experience in customizing screws and other types of hardware parts, we relieve hard problems.

Global Wide-Area Application

Global market layout Exported in more than 40 countries, international cooperation guaranteed to complete delivery. ​ In-depth application of multiple industries To famous enterprises serving 5 or more high precision fields.

Full-Cycle Excellent Service

Full-process service guarantee Full-process service to guarantee a pleasant cooperate experience. ​ Customized value-added service Joint reasearch satisfying demands for the entirety of process.

Sealing Screws | Leak-Proof & Weather-Resistant Fasteners with Integrated Seals

Primary Applications and Purpose
The primary reasons for using a sealing screw, include:
Fluid Containment: To perform fluid containment of water, oil, fuel, hydraulic fluid, coolant, or gas from leaking from a component.
Contamination Exclusion: To perform contamination exclusion of dust, dirt, moisture, and other contaminants from entering a system via a threaded opening.
Pressure Retention: To perform pressure retention (or vacuum) within a housing or system.
Simplified Assembly: To simplify assembly and decrease the number of components and process steps because the fastener and the seal or gasket are produced as part of one component. This decreases assembly time and the opportunity for assembly error.

FAQ

When was Yu-Huang established?

Yu-Huang is established since 1998.
Yu-Huang is focused on the R&D and the customize of non-standard hardware fasteners and for the mass production of precision fasteners.
Certifications: Yu-Huang possess ISO9001, ISO14001 and IATF16949 certifications. Honor: it has been titled a High-tech Enterprise.

Our Company

Full-chain Intelligent Manufacturing · Yuhuang Leading Precision Fastening

22

Aug

Full-chain Intelligent Manufacturing · Yuhuang Leading Precision Fastening

Discover how Yuhuang’s end-to-end smart manufacturing delivers ISO-certified, high-precision fasteners for 5G, aerospace & top brands. Request a supplier assessment now.
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Yuhuang Quality connects 40 countries' markets

22

Aug

Yuhuang Quality connects 40 countries' markets

Discover how Yuhuang connects global markets with ISO-certified, zero-emission fastener solutions trusted by Huawei, Xiaomi & aerospace leaders. Learn more.
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Small fasteners, big customization Yuhuang's strength

22

Aug

Small fasteners, big customization Yuhuang's strength

Discover how Yuhuang's custom micro fasteners enhance reliability and performance in high-density, lightweight applications. Reduce failure rates & boost efficiency. Learn more.
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The Development History of Yuhuang

27

Sep

The Development History of Yuhuang

Discover how Yuhuang transformed from a small hardware workshop into a leading China screws factory, delivering high-precision, custom fasteners worldwide. Explore our journey of innovation, quality, and global expansion—partner with us for reliable, high-end screw solutions.
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What Our Clients Are Saying

Mike R.
Mike R.

"We had a hydraulic press that constantly leaked fluid from the access panels. We tried numerous types of sealants and tapes, but the constant vibration dented the tape and the sealant failed inevitably. A colleague of mine suggested trying sealant screws, and their own built-in O-ring was unbelievable. They were easy to install while using a regular wrench, and we haven't had any leaks in over six months. And the time and money saved."

Elena S.
Elena S.

"We install these screws on electronic housings of sailboat navigation devices. The 316 stainless screw and nice rubber seal are ideal for ocean use. They seal out water and air from electronics that are otherwise sensitive. I will never use anything for our custom builds again."

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Why Choose Us

Why Choose Us

Established in 1998, Yu-Huang is a comprehensive industrial-trade company that engages in manufacturing, research and development, sales, and service. Focused on the research and development/customization of non-standard hardware fasteners, it also manufactures precision fasteners to GB/ANSI/DIN/JIS/ISO standards across screw/nut/washer/stamped products.
With a 20,000 square meter footprint, Yu-Huang has dedicated teams and mature supply chains that guarantee efficiency and stability in output. Quality assurance is in place via internal quality checks and certifications , and Yu-Huang boast a "High-tech Enterprise" title.
Yu-Huang products are exported to more than 40 countries and applied to 5G/aerospace/electronics/auto parts and some large companies like Xiaomi, Huawei, and SONY. Our dedicated pre-sales/in-sales/after-sales representative offers OEM&ODM, and 1-stop hardware assembly solutions in adherence to the "quality first, customer satisfaction" motto to create custom

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