Sealing Screws

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Pan‑Head Machine Screws Metric Parallel‑Thread Fasteners For Pre‑Tapped Hole And Nut‑Matched Assembly

Pan Head Self Tapping Screws High Speed Thread Forming Fasteners For Plastic Wood Sheet Metal Assembly

Pan Head Self‑Tapping Screws Multi‑Material Self‑Threading Fasteners For Sheet Metal Plastic Wood Assembly

Cap Head Security Screws Tamper Resistant Cylinder Head Anti Theft Fasteners For Equipment Enclosure Assembly

Flat‑Head Self‑Tapping Screws – Countersunk Tapping Fasteners For Flush‑Mount Assembly

Security Screws – Tamper‑Proof Anti‑Theft Fasteners For Equipment & Public Hardware

Security Screws | Tamper‑Resistant Anti‑Theft Fasteners For Public & Equipment Assemblies

SEMS Screws Solve Real‑World Fastener Pain Points In Volume Assembly

SEMS Screws | Captive Washer Combination Fasteners With Application‑Specific Selection Matrix

SEMS Screws | Captive‑Washer Integrated Fasteners For BOM Simplified Manufacturing

EPDM Washer Sealing Screws Zinc Plated Hex Phillips Pan Cap Head For Outdoor Electrical Enclosures And Meter Boxes

EPDM Washer Sealing Screws Zinc Plated Hex Phillips Pan Cap Head For Outdoor Electrical Enclosures And Meter Boxes

Sealing screws come with a rubber ring already fitted under the head. Tighten them and the rubber compresses against the surface. No water gets in. No dust gets in. No sealant needed. IP67 and IP68 rated. Stainless steel 304, 316, or zinc plated. Phillips pan head, hex washer head, or hex socket. M4 M5 M6.

Product Details

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What problem does a sealing screw solve?

Water finds its way through screw holes. Dust does too. Regular screws leave gaps between the head and the surface. Those gaps let moisture in. Over time, the hole rusts. The screw corrodes. The connection fails. Sealing screws fix that before it starts.

How it works

Look under the head. You will see a rubber ring sitting in a groove. When you drive the screw in, that ring gets squeezed between the head and the surface. The gap disappears. Water cannot get past. Dust cannot get past. The seal gets tighter the more you turn.

Where the seal comes from

It is all about that rubber ring. Different rubber compounds handle different conditions:

NBR: Stands up to oil and grease.

Silicone: Handles extreme heat and cold.

EPDM: Resists sun, rain, and weather.

FKM: Holds up against harsh chemicals.

Pick the right one for your job.

Three head styles we offer

Phillips pan head: The standard. Works with any Phillips screwdriver. Most people grab this one.

Hex washer head: Has a flange built into it. Acts like a washer. No separate parts needed.

Hex socket head: Uses an Allen key. Fits tight spaces where a screwdriver does not reach.

Material choices

304 stainless steel: Resists rust. Good for most outdoor work.

316 stainless steel: Gives you extra protection. Use it near saltwater.

Zinc plated steel: The budget option. Works fine for indoor or light outdoor.

Waterproof ratings

🛡️ IP67: One meter of water for thirty minutes. No leaks.

🌊 IP68: Stays underwater longer. Good for pumps and submerged gear.

Sizes we carry

M4, M5, and M6. Lengths from 6mm to 30mm. Need custom sizes? Just ask.

What our customers use them for

Outdoor electrical boxes. Junction boxes. Power meters. Gas meters. Marine equipment. Boat fittings. Car lighting. Industrial panels. Metal roofs. Anywhere water is a problem.

Quality Assurance

We check every O ring before packing. We test every batch. ISO 9001 and ISO 10012 certified.

Quick Q&A

Q: Do I still need sealant? A: No. The rubber ring seals it. Just drive the screw in.

Q: Which rubber should I pick for outdoor use? A: EPDM for general outdoor. FKM for chemicals. Silicone for extreme temperatures. NBR for oil and grease.

Q: What is the difference between IP67 and IP68? A: IP67 means 1 meter of water for 30 minutes. IP68 means longer submersion.

Q: Can I reuse these screws? A: Yes. The rubber compresses and bounces back. Reuse them several times.

Q: Do you make custom sizes? A: Yes. Send us your drawing or sample. We will make what you need.

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About YH Fastener

YH Fastener has been making screws and fasteners since 1998. Our lineup includes sealing screws, self tapping screws, machine screws, shoulder screws, and custom fasteners. We are ISO 9001 and ISO 10012 certified. Every batch is inspected before it ships. We sell direct and ship to over 60 countries worldwide.

Product Technical Details

Attribute	Details
Screw Type	Sealing Screws
Head Styles	Phillips Pan Head / Hex Washer Head / Hex Socket Head
Sealing Material	NBR / Silicone / EPDM / FKM
Fastener Materials	304 Stainless Steel, 316 Stainless Steel, Zinc Plated Carbon Steel
Size	M4 M5 M6, Length 6‑30mm
Protection Rating	IP67 / IP68
Typical Use	Outdoor Enclosures, Junction Boxes, Marine Equipment, Metal Roofing

Got a project that needs sealing screws? Send us your drawing or sample. Tell us the size, material, and quantity. We will get back to you within 24 hours. OEM orders and custom specs are both welcome.

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