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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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  • Custom sealing phillips washer head screw manufacturer

    Custom sealing phillips washer head screw manufacturer

    • Materials: carbon steel, alloy steel, and so on
    • Surface corrosion
    • Customzied available
    • Easy to install

    Category: Sealing screwsTags: custom fasteners manufacturer, phillips washer head screw, sealing screw

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  • Black nickel sealing phillips pan head screw with o ring

    Black nickel sealing phillips pan head screw with o ring

    • Material: Stainless steel, carbon steel, and so on
    • Standards, include DIN, DIN, ANSI, GB
    • O-ring is forced downward and outward
    • Additional cushioning between the grip and bushing

    Category: Sealing screwsTags: black nickel screws, phillips pan head screw, screw with o ring, sealing screws

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  • Truss head slotted sealing screw with o ring

    Truss head slotted sealing screw with o ring

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

    Category: Sealing screwsTags: custom fasteners manufacturer, screw with o ring, sealing screws, self sealing fasteners, slotted head screw, truss head screw

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  • Tamper-proof screws self sealing socket cap machine screws

    Tamper-proof screws self sealing socket cap machine screws

    • 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: DIN 912, O ring screw, o-ring screws, sealing screw, self sealing screw, water-proof screws

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  • Waterproof screw sealing screw torx pan head 18-8 grade stainless steel

    Waterproof screw sealing screw torx pan head 18-8 grade stainless steel

    • 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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  • Captive pin torx sealing anti tamper screws supplier

    Captive pin torx sealing anti tamper screws supplier

    • Nyseal waterproof standards, include DIN, DIN.
    • Different materials available
    • Stainless steel, and so on.
    • Can be used for machine and electric equipment

    Category: Sealing screwsTags: anti tamper screws, captive screw, pin torx screws, sealing screws, six lobe screw, waterproof screws

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  • Self sealing socket countersunk head cap screw wholesale

    Self sealing socket countersunk head cap screw wholesale

    • Materials: aluminium, copper, and so on.
    • Surface corrosion
    • Easy to use
    • Customzied available

    Category: Sealing screwsTags: sealing screw, self sealing screws, socket countersunk head cap screw

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  • Self sealing screw socket cap DIN 912 yellow patch

    Self sealing screw socket cap DIN 912 yellow patch

    • 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: DIN 912, O ring screw, o-ring screws, sealing screw, self sealing screw, water-proof screws

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  • Self sealing pan head torx stainless steel screws with o ring

    Self sealing pan head torx stainless steel screws with o ring

    • Material: Stainless steel, carbon steel, alloy steel, aluminium, copper and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Granting your most sensitive equipment unbeatable
    • Achieving metal-to-metal contact

    Category: Sealing screwsTags: sealing screw, self sealing screws, torx stainless steel screws

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  • Self sealing pan head phillips screw fasteners manufacturer

    Self sealing pan head phillips screw fasteners manufacturer

    • Material: Alloy steel, aluminium, copper and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Compressed O-ring, and the slot in the top of the bushing
    • Use for different seal requirement
    • Category: Sealing screwsTags: custom fasteners manufacturer, pan head phillips screw, sealing screws, self sealing fasteners
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  • Torx drive pan head self sealing fasteners manufacturer

    Torx drive pan head self sealing fasteners manufacturer

    • Material: Stainless steel, aluminium, copper and so on
    • Standards, include DIN, DIN, ANSI, GB
    • Surface corrosion and oxygen diffusion

    Category: Sealing screwsTags: custom fasteners manufacturer, pan head screw, self sealing fasteners, torx drive screws

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  • Self Seal Screw waterproof o ring self-sealing screws

    Self Seal Screw waterproof o ring self-sealing screws

    Self Seal Screws are innovative fasteners designed to provide a reliable and efficient sealing solution in various applications. These screws feature unique characteristics that make them ideal for environments where preventing leakage or the ingress of contaminants is crucial. Here, we will describe the key features of Self Seal Screws in four paragraphs.

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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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