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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.
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.
It is all about that rubber ring. Different rubber compounds handle different conditions:
Pick the right one for your job.
M4, M5, and M6. Lengths from 6mm to 30mm. Need custom sizes? Just ask.
Outdoor electrical boxes. Junction boxes. Power meters. Gas meters. Marine equipment. Boat fittings. Car lighting. Industrial panels. Metal roofs. Anywhere water is a problem.
We check every O ring before packing. We test every batch. ISO 9001 and ISO 10012 certified.
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.
| 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 |
A: No. The rubber ring seals it. Just drive the screw in.
A: EPDM for general outdoor. FKM for chemicals. Silicone for extreme temperatures. NBR for oil and grease.
A: IP67 means 1 meter of water for 30 minutes. IP68 means longer submersion.
A: Yes. The rubber compresses and bounces back. Reuse them several times.
A: Yes. Send us your drawing or sample. We will make what you need.
A: Send us your drawing or sample with size, material, and quantity. We get back to you within 24 hours.
