Waterproof gaskets for outdoor cameras
Compression-molded silicone gaskets and specialized foam tapes help outdoor cameras achieve IP66 dust and water resistance, operating reliably in heavy rain, wind-blown dust and high-pressure washdowns.
The IP66 rating requires a device to be completely dust-tight and to withstand powerful water jets of 100 liters per minute from a distance of 2.5–3 m. For cameras with many joints, such as the front housing, rear housing, glass, cable gland and mount, every point is a potential leak path.
Traffic, factory and construction site surveillance cameras are often mounted at great heights, and the maintenance cost of each ladder climb or lift truck visit is significant. A camera that fails due to water after one rainy season therefore causes damage far exceeding the value of the device.
Points that need sealing
- The joint between the front and rear housings.
- The protective glass for the lens and infrared illuminators.
- Cable entry holes for power and network cables.
- Reset buttons and memory card slots.
- Pressure equalization vents for thermal balance.
Compression silicone gaskets or foam tape
Molded or compression silicone gaskets
Suitable for screw-fastened joints, with good compression resistance and recovery after repeated disassembly for maintenance. A hardness of Shore A 30–50 with a design compression of 20–30% is common.
Formed-in-place (FIP) gaskets
Silicone adhesive is dispensed by a robot along the housing groove and cures into a gasket. This saves tooling costs and offers flexibility when the design changes.
Closed-cell foam tape
For bonding flat glass and small covers. Closed-cell acrylic or PE foam both bonds and seals, allowing fast assembly.
Achieving IP66 in the lab is easy; maintaining IP66 after three years of sun and rain is the hard part. Gasket compression set recovery is the metric we always ask customers to check. — Materials Engineer, AMS Vietnam
ePTFE vent membranes
Outdoor cameras heat up during the day and cool down at night, creating a pressure differential that draws moisture in through small gaps and causes condensation on the glass. ePTFE vent membranes let air through while blocking water and dust, equalizing pressure and protecting the gaskets from constant stress.
Pre-shipment testing
- Leak testing with a pressure decay tester on 100% of products.
- Lot-based sampling for IP66 water jet testing.
- Damp heat aging followed by repeat seal testing.
At the design stage, the gasket groove must be properly sized so the gasket is not over-compressed or displaced from the groove when screws are tightened. Tightening screws in a diagonal sequence with uniform torque also affects sealing. These instructions should be included in the installation guide for field maintenance teams as well.
AMS supplies silicone for gaskets, foam tapes and vent membranes. Contact AMS Vietnam for advice on sealing solutions.
