Sealing Fastener Manufacturer|IP68 Sealing Bolts / Sealing Plugs
YF ZCJ sealing fastener source factory: O-ring sealed bolts and nuts, pre-applied adhesive sealing, sealing plugs and sealed clinch parts — 15 products achieving high-grade water and dust protection through two routes: an elastomer seal or a pre-applied sealant (we can help the assembly reach IP68, subject to assembly-level testing). Made for outdoor lighting, EV battery packs, chargers and automotive electronic housings.
Why Choose YF ZCJ Sealing Fasteners
IP68-class sealing
O-ring compression designed to sealing standards for reliable protection
Pre-applied sealant
Sealant pre-coated on the thread — tighten and it seals, no secondary dispensing
Full plug range
Pull-up, ball-expansion and magnetic plugs for different hole sizes
Weather-resistant materials
Stainless, brass and alloy steel with plating for long water and corrosion exposure
Automotive quality
IATF 16949 system, air-tightness test reports with every lot
Made to drawing
Seal geometry and compression matched to the housing drawing
Sealing Product Series
O-ring sealed parts
Bolts / nutsFace O-ring sealing, re-usable while keeping the seal
View products ↓Pre-applied sealant
No dispensingThread pre-coated with sealant, sealing as it is assembled
View products ↓Sealing plugs
Hole closurePull-up, expansion and magnetic plugs for process and mounting holes
View products ↓Sealed clinch / rivet parts
Panel sealingSealed clinch nuts and standoffs, sealed rivet nuts and rivets
View products ↓Sealing Products (12 models)
High-Precision Threaded Sealing Plugs
Our threaded sealing plugs are engineered with high-precision threading to provide an exceptional leak-proof interface. Designed for the secure closure of process holes, ...
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Magnetic Expansion Sealing Plugs
Our magnetic sealing plugs feature an integrated high-strength magnetic core designed to actively capture and retain metallic particles within the system fluid. This ...
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Steel Ball Expansion Sealing Plugs
Our ball-style expansion plugs feature a high-precision mechanical expansion design to ensure superior leak-proof integrity. By driving a stainless steel ball into the ...
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High-Performance Expansion Sealing Plugs
Our expansion sealing plugs utilize a precision-engineered pull-to-expand mechanism to achieve superior leak-proof integrity. Designed for the permanent closure of ...
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All-Aluminum High-Pressure Expansion Sealing Plugs
Our all-aluminum expansion sealing plugs are engineered for high-integrity sealing in critical processing holes. Manufactured from premium-grade aluminum alloy, these ...
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Sealed Self-Clinching Standoffs (Waterproof Series)
Sealed Self-Clinching Standoffs Engineered with a specialized structural design, our Sealed Self-Clinching Standoffs improve water and dust protection (rating per ...
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Sealed Bolts
High-Precision Self-Sealing Bolts (O-Ring Integrated) Our self-sealing bolts feature a seamless integration of high-strength fasteners with specialized elastomeric seals ...
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NFE 25-511 Conical Lock Washers
This product complies with the NF E 25-511 standard and is manufactured from specialized spring steel. Its unique conical structure provides a durable compensatory ...
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Type 69 Pre-applied Anaerobic Sealant Rivet Nut
69 Series Pre-Applied Sealant Blind Rivets feature an advanced pre-applied adhesive coating. Upon installation, the sealant layer cures to form a robust seal, providing ...
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Type 71 Flush Knurled Sealing Rivet Nut
71 Series Flat Head Knurled Sealed Blind Nut Sert features a flat head knurled design integrated with a sealing function. Installed via a blind riveting process, it ...
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Knurled Panel Clinch Thumb Screw
Panel Self-Clinching Screws feature a precision knurled clinching structure that allows them to be permanently pressed into sheet metal, providing a stable external ...
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Multifunctional Sealing & Anti-Loosening Screw
Multifunctional Sealing & Anti-Loosening Screws achieve superior vibration resistance through pre-applied adhesive or specialized assembly components. Featuring an ...
DetailsSealing Selection Guide
1. By protection class
For IPX7 and above prefer face O-ring sealing; for IPX5–6 and thread seepage protection the pre-applied sealant route is enough.
2. By service frequency
Covers opened regularly should use O-ring sealing (re-usable); for one-time assembly pre-applied sealant is more economical.
3. By hole type
Close process holes and spare mounting holes with sealing plugs; join thin panels with sealed clinch or rivet parts.
4. By housing material
Aluminium, sheet steel and plastic housings all have matching solutions — watch the hardness match between O-ring and sealing face.
5. Sealing essentials
Surface roughness and groove compression determine the result — share the housing drawing and we will check it with you.
Typical Applications
Outdoor lighting
Floodlight and streetlight housing sealing
EV battery packs
Bolt sealing on battery-pack housings
EV chargers
Sealing at charger bodies and cable entries
Automotive electronics
Controller and sensor housing sealing
Telecom equipment
Outdoor base-station water and dust protection
Subsea equipment
Submersible markers and underwater lighting
Sealing FAQ
Q1Can O-ring sealed bolts be re-used?
Yes. O-ring sealing relies on face compression and keeps sealing over repeated assembly when properly designed; for frequent servicing keep spare O-rings.
Q2Pre-applied sealant or O-ring — which is better?
Pre-applied sealant is cheaper, needs no dispensing and seals well once; O-ring sealing is re-usable and takes higher pressure. Choose by service requirement.
Q3Can it really reach IP68?
The fastener itself is designed to IP68-class protection; the assembly rating also depends on housing structure and other joint faces, so share the housing design and we will assess it together.
Q4How do I select a sealing plug?
Choose by hole size and whether it must be removable: permanent closure uses pull-up or expansion types; where re-opening or magnetic retention is needed choose the matching model.
Q5What is the temperature range?
NBR O-rings work from about -40 to 120 °C and FKM from about -20 to 200 °C; for high temperature choose FKM or a metal seal.
Q6Can you customize to our housing drawing?
Yes — groove dimensions and compression are made to the sealing-face drawing, with air-tightness test reports supplied.
Need the full catalog or custom sealing fasteners to drawing?
Send specifications, drawings or application details for selection advice, test reports and a fast quote — direct to our sales lead.
