When you install a video intercom at a building entrance, the outdoor station faces rain, dust, temperature swings, and years of exposure. The difference between a device that survives and one that fails often comes down to a process most buyers never see: glue dispensing. At FARHD, every outdoor unit undergoes precise, automated glue dispensing to create a waterproof and dustproof barrier. It is one of the quiet reasons our intercoms maintain IP65 performance—and why partners in over 100 countries trust our factory.
In the video intercom industry, specifications like “IP65” appear on datasheets for products at every price point. But an IP rating is only as good as the manufacturing process behind it. A seal that looks adequate on day one can fail after a few months of thermal cycling if the adhesive is uneven, incomplete, or applied with inconsistent pressure.
FARHD has been manufacturing video intercom systems since 1998. Over 28 years, we have learned that reliability is built at the process level—not added at final inspection. Our glue dispensing process is a core part of that philosophy.
Why Glue Dispensing Matters for Outdoor Intercoms
The outdoor station is the most exposed component in any intercom system. It must withstand:
- Rain and water jets – IP65 requires protection against low-pressure water jets from any direction.
- Dust and sand – Fine particles can infiltrate seams and damage electronics.
- Temperature cycling – Repeated expansion and contraction can open microscopic gaps.
- UV exposure – Sunlight degrades some sealants over time.
- Condensation – Temperature changes can cause moisture to form inside the housing if the seal is incomplete.
A poorly dispensed seal may pass a factory spray test but fail in the field after a few seasons. A precisely dispensed seal—applied at the right volume, in the right pattern, with the right curing conditions—maintains its integrity for years.
What Is Glue Dispensing?
Glue dispensing is the controlled application of an adhesive or sealant to specific areas of a product assembly. In video intercoms, it is typically used to:
- Seal the gap between the front panel and the housing.
- Protect the camera lens module from moisture ingress.
- Secure internal connectors against vibration.
- Create a gasket-like barrier around buttons, card readers, and cable entry points.
The process is not simply “applying glue.” It requires:
- Correct material selection – the adhesive must bond to the housing material (ABS or aluminum alloy), remain flexible across temperature ranges, and resist UV and aging.
- Precise volume control – too little sealant leaves gaps; too much can overflow, interfere with assembly, or create cosmetic defects.
- Consistent path – the dispensed line must follow the sealing groove without breaks or air pockets.
- Proper curing – temperature and humidity during curing affect final adhesion and elasticity.
FARHD uses automated dispensing equipment to control these variables. The result is a repeatable, auditable process—not an operator-dependent skill.
FARHD’s Glue Dispensing Process: Step by Step
1. Surface Preparation
Before dispensing, the housing and sealing surfaces are cleaned and inspected. Any dust, oil, or mold release agent can prevent proper adhesion. Operators verify surface condition against a work instruction.
2. Material Selection and Mixing
The adhesive is selected based on the housing material and the required environmental performance. For ABS housings, a flexible sealant with good adhesion to plastics is used. For aluminum alloy housings, a different formulation may be specified. The material is prepared according to the manufacturer’s mixing and degassing instructions.
3. Automated Dispensing
A programmable dispensing system applies the sealant along a defined path. The volume and speed are set for the specific housing geometry. The dispensing nozzle follows the sealing groove with consistent pressure and travel speed.
4. Visual and Dimensional Inspection
After dispensing, the sealant path is inspected for continuity, width, and height. Any breaks, bubbles, or excess material are noted and corrected before assembly.
5. Assembly and Curing
The front panel and housing are assembled while the sealant is still workable, ensuring full contact. The unit then passes through a controlled curing period. Curing temperature and time are recorded.
6. Final Seal Verification
After curing, units are subjected to functional testing and sampling for waterproof verification. IP65 testing is performed on production samples using water spray from multiple angles. Any failure triggers a review of the dispensing process for that batch.
This is not a “one-off” quality check. It is a process control system that runs on every production lot.
How Glue Dispensing Fits into FARHD’s Quality Control System
Glue dispensing is one part of a broader quality assurance framework that covers every stage of production:
| Stage | What We Check |
|---|---|
| Incoming material inspection | Housing dimensions, surface condition, sealant batch certification |
| Dispensing process | Path continuity, volume, visual defects |
| Assembly | Sealant compression, panel alignment |
| Curing | Temperature and time logging |
| Functional testing | Display, touch, camera, audio, calling, unlocking |
| Aging test | 12+ hours continuous operation under elevated temperature and humidity |
| Waterproof testing | IP65 spray verification on production samples |
| Temperature cycling | -40°C to +70°C performance validation |
| Final inspection | Visual check, label accuracy, accessory completeness |
All FARHD products carry CE, FCC, RoHS, IP65, and EMC certifications. The glue dispensing process is one of the manufacturing controls that supports the IP65 claim—not just on a test sample, but across production batches.
Why This Matters for Your Projects
For distributors and wholesalers: a product that maintains its IP rating over time reduces warranty returns and protects your reputation. Glue dispensing quality is a leading indicator of long-term field reliability.
For system integrators and contractors: a properly sealed outdoor station means fewer callbacks for water ingress, fogged lenses, or failed buttons. Installation labor is expensive; rework is worse.
For property developers: residents expect the entrance intercom to work in any weather. A sealed outdoor station reduces maintenance calls and extends the system’s service life.
For OEM/ODM partners: if your brand is on the product, the manufacturing process behind it is your quality story. FARHD’s dispensing process is documented and repeatable—so your product meets the same standard, batch after batch.
28 Years of Manufacturing Experience, Behind Every Unit
FARHD was founded in 1998. Over 28 years, we have built our factory around the principle that quality is a process, not an inspection. Our capabilities include:
- In-house R&D – hardware, software, firmware, and mechanical design.
- Automated production – SMT lines, injection molding, assembly lines.
- Process control – glue dispensing, sealing, aging tests, temperature cycling, waterproof verification.
- Global certifications – CE, FCC, RoHS, IP65, EMC, ISO9001, SGS.
- OEM/ODM/SKD services – custom branding, packaging, and software.
- On-time shipment – stable lead times for samples and bulk orders.
We are not a trading company. We are a source factory—and the glue dispensing process is one of the details that distinguishes a factory that controls its processes from one that merely assembles.
Frequently Asked Questions
Q: Does every FARHD outdoor unit undergo glue dispensing?
A: Yes. The process is applied to every outdoor station that requires a sealed housing, according to the product’s design specifications.
Q: Is glue dispensing the same as IP65 testing?
A: No. Glue dispensing is a manufacturing process that creates the seal. IP65 testing verifies that the seal performs as required. Both are part of FARHD’s quality system.
Q: Can I request documentation of the process?
A: Yes. FARHD can provide process descriptions and test reports for qualified projects.
Q: Does glue dispensing affect repairability?
A: The sealant is selected to allow service access where required. For field repairs, FARHD provides guidance on resealing if a housing is opened.
Q: Does FARHD offer OEM/ODM for sealed outdoor stations?
A: Yes. We support custom housing design, branding, and packaging, with the same dispensing and sealing process applied to custom units.
Welcome Your Inquiry
If you are sourcing video intercom systems for a project that demands long-term outdoor reliability, FARHD is ready to support you with product documentation, samples, and factory-direct pricing.
Email: info@farhd.com
Website: www.farhd.com
WhatsApp: +86 188 2370 9809 / +86 199 2545 1918
Post time: Oct-22-2026
