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A sealing screw is a fastener with a rubber O-ring or sealing washer pre-installed under the head. This design eliminates the need for additional sealant or separate washers. During installation, as the screw is tightened, the rubber seal is compressed between the screw head and the mating surface, forming a reliable watertight and dust-tight barrier.
You drive the screw in. The rubber ring gets squeezed between the head and the surface. It fills every gap. Water cannot get through. Dust cannot get through.
| Material | Best for |
|---|---|
| NBR | General purpose, oil resistance |
| Silicone | Extreme heat and cold (-50°C to 200°C) |
| EPDM | Outdoor, sun, rain, weather changes |
| FKM | Chemicals, fuels, acids |
Metric M4, M5, M6. Lengths from 6mm to 30mm. Need a different size? Just ask.
Outdoor electrical boxes. Junction boxes. Electric meters. Gas meters. Boat fittings. Marine equipment. Car lights. Industrial control panels. Metal roofs.
One piece. No loose rings. No glue. No waiting. Fast installation. Consistent seal every time. Same result on every screw.
Yes. Every O ring is inspected before packing. Every batch is tested. O rings stay in place during shipping and installation. ISO 9001 and ISO 10012 certified.
Yes. Send us your drawing or sample. We will make exactly what you need. OEM orders welcome.
YH Fastener started in 1998. We make sealing screws, self tapping screws, machine screws, shoulder screws, and custom fasteners. ISO 9001 and ISO 10012 certified. Every batch inspected. Factory direct. Ship to 60+ countries.
