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Sealing Screws

YH FASTENER offers sealing screws with built-in O-rings to provide leak-proof fastening against gas, oil, and moisture. Ideal for demanding industrial and outdoor environments.

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  • Cross Recessed Countersunk head waterproof o ring self-sealing screws

    Cross Recessed Countersunk head waterproof o ring self-sealing screws

    Our waterproof screws are specially designed to provide excellent waterproof performance and are able to resist the erosion of humid environments and harsh weather. Whether it’s outdoor construction, marine equipment, or other occasions that require waterproofing, our waterproofing screws maintain a secure connection to provide reliable support and protection for your project.

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  • hexagon waterproof screw with o ring sealing screw

    hexagon waterproof screw with o ring sealing screw

    The company’s popular screw products perform well in waterproofing and provide customers with an excellent experience. This watertight screw is made of high-quality materials with excellent waterproof properties, which can effectively prevent moisture, moisture and corrosive substances from affecting the screw. Whether in indoor or outdoor environments, this watertight screw secures a wide range of materials, including wood, metal, and plastic, reliably.

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  • pan cross recessed waterproof screw with rubber washer

    pan cross recessed waterproof screw with rubber washer

    One of the most popular products that our company is proud of is our Waterproof Screw – a premium screw designed for outdoor environments. In gardening, construction, and other outdoor projects, water and moisture are often the number one enemy of screws and can cause rust, corrosion, and connection failure. In order to solve these problems, our company has developed this waterproof screw, and won the favor of the market.

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  • china screw manufacturer custom Sealing Screws With Silicone O-Ring

    china screw manufacturer custom Sealing Screws With Silicone O-Ring

    Our Sealing Screws are manufactured with high-quality, water-repellent materials and have been engineered to resist water vapor, liquids and particulate penetration in harsh environments. Whether it’s outdoor equipment in harsh weather conditions or industrial equipment immersed in water for long periods of time, Sealing Screws reliably protects equipment from damage and corrosion.

    Our company pays attention to quality control, and all Sealing Screws are rigorously tested and verified to ensure their stable waterproof performance. You can rest assured that our Sealing Screws will ensure that your equipment will perform at its best in wet, rainy or year-round flooded environments. Choose our Sealing Screws and choose a professional waterproof sealing solution.

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  • High quality China supplier productions sealing fixing screw

    High quality China supplier productions sealing fixing screw

    We value product quality and performance, and all Sealing Screws are rigorously tested to ensure their stable waterproof performance. You can count on our Sealing Screws to provide your equipment with excellent waterproof protection to keep it working at its best in wet, rainy or long-term submerged environments.

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  • Perfect Quality And Bottom Price wholesale waterproofing screw

    Perfect Quality And Bottom Price wholesale waterproofing screw

    The best feature of Sealing Screws is its waterproof sealing function. Whether it’s outdoor equipment, aerospace equipment, or medical equipment, Sealing Screws can effectively prevent the ingress of moisture, liquids and dust in wet or harsh environments, ensuring stable operation and extended life of equipment.

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  • DIN 912 sealing cheese head hex socket screws supplier

    DIN 912 sealing cheese head hex socket screws supplier

    • Material: alloy steel, aluminium, copper and so on
    • Customized available
    • Easy to use
    • Can be used for machine and electric equipment

    Category: Sealing screwsTags: cheese head screw, hex socket screws, sealing screws

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  • Pin torx nyseal sealing bolts fasteners supplier

    Pin torx nyseal sealing bolts fasteners supplier

    • Material: Stainless steel, carbon steel, and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Industry: Computer and electronic equipment, and motor vehicle.
    • Easy to use

    Category: Sealing screwsTags: anti tamper screws, nyseal screws, pin torx security screws, sealing bolts, sealing screws, self sealing fasteners

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  • Phillips drive pan head self sealing bolts with o ring

    Phillips drive pan head self sealing bolts with o ring

    • Material: Stainless steel, carbon steel, and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Malleable and strong captive “O” ring
    • Contamination from air, water, gas and other materials

    Category: Sealing screwsTags: phillips drive screw, sealing screw, self sealing bolts

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  • Pan head phillips drive self sealing screws supplier

    Pan head phillips drive self sealing screws supplier

    • Material: alloy steel, aluminium, copper and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Compatible “O” ring material
    • Fasten self-locking strips, pellets and patches

    Category: Sealing screwsTags: phillips drive screw, sealing screw, self sealing screws

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  • Seal screw self-sealing machine screw torx drive stainless

    Seal screw self-sealing machine screw torx drive stainless

    • Standard: DIN, ANSI, JIS, ISO
    • From M1-M12 or O#-1/2 diameter
    • ISO9001, ISO14001, TS16949 certificated
    • Different drive and head style for customized order
    • Various materials can be customized
    • MOQ:10000pcs

    Category: Sealing screwsTags: O ring screw, o-ring screws, sealing screw, water-proof screws

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  • Custom self sealing fasteners manufacturer

    Custom self sealing fasteners manufacturer

    • Material: Stainless steel,alloy steel, and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Accommodate a rubber “O” ring
    • Perfect match different machine and mechanical areas

    Category: Sealing screwsTags: custom fasteners manufacturer, fasteners, sealing screws, self sealing fasteners

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Sealing Screw safeguards applications from extreme weather, moisture, and gas infiltration by eliminating gaps between fasteners and contact surfaces. This protection is accomplished through a rubber O-ring installed beneath the fastener, which creates an effective barrier against contaminants like dirt and water penetration. The compression of the O-ring ensures complete closure of potential entry points, maintaining environmental integrity in the sealed assembly.

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Types of Sealing screws

Sealing screws come in various types, each suited to specific applications and designs. Here are some common types of waterproof screws:

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Sealing Pan Head Screws

Flat head with built-in gasket/O-ring, compresses surfaces to block water/dust in electronics.

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Cap Head O-Ring Seal Screws

Cylindrical head with O-ring, seals under pressure for automotive/machinery.

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Countersunk O-Ring Seal Screws

Flush-mounted with O-ring groove, waterproofs marine gear/instruments.

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Hex Head O-Ring Seal Bolts

Hex head + flange + O-ring, resists vibration in pipes/heavy equipment.

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Cap Head Seal Screws withUnder Head Seal

Pre-coated rubber/nylon layer, instant sealing for outdoor/telecom setups.

These types of sael screws can be further customized in terms of material, thread type, O-Ring，and surface treatment to meet the specific needs of various applications.

Application of Sealing screws

Sealing screws are widely used in scenarios requiring leak-proof, corrosion-resistant, or environmental isolation. Key applications include:

1. Electronics & Electrical Equipment

Applications: Smartphones/laptops, outdoor surveillance systems, telecom base stations.

Function: Block moisture/dust from sensitive circuits (e.g., O-ring screws or nylon-patched screws).

2. Automotive & Transportation

Applications: Engine components, headlights, battery housings, chassis.

Function: Resist oil, heat, and vibration (e.g., flanged screws or cap head O-ring screws).

3. Industrial Machinery

Applications: Hydraulic systems, pipelines, pumps/valves, heavy machinery.

Function: High-pressure sealing and shock resistance (e.g., hex head O-ring bolts or thread-sealed screws).

4. Outdoor & Construction

Applications: Marine decks, outdoor lighting, solar mounts, bridges.

Function: Saltwater/corrosion resistance (e.g., countersunk O-ring screws or stainless steel flanged screws).

5. Medical & Lab Equipment

Applications: Sterile instruments, liquid-handling devices, sealed chambers.

Function: Chemical resistance and airtightness (require biocompatible sealing screws).

How To Order Custom Fasteners

At Yuhuang, the process of ordering Custom Fasteners is simple and efficient:

1.Specification Definition: Clarify material type, dimensional requirements, thread specifications, and head design for your application.

2.Consultation Initiation: Reach out to our team to review your requirements or schedule a technical discussion.

3.Order Confirmation: Finalize details, and we'll commence production immediately upon approval.

4.Timely Fulfillment: Your order is prioritized for on-schedule delivery, ensuring alignment with project deadlines through strict adherence to timelines.

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FAQ

1. Q: What is a sealing screw?
A: A screw with a built-in seal to block water, dust, or gas.

2. Q: What are waterproof screws called?
A: Waterproof screws, commonly termed sealing screws, use integrated seals (e.g., O-rings) to block water penetration in joints.

3. Q: What is the purpose of a sealing Fasteners fitting?
A: Sealing fasteners prevent water, dust, or gas from entering joints to ensure environmental protection.

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