Custom Earplugs Step by Step Guide
Behind the Scenes: How We Make Custom Earplugs at Perth Hearing & Tinnitus Clinic
Custom‑molded earplugs are becoming more and more popular as an alternative to one-size-fits-all foam earplugs. Custom plugs are crafted to match the exact curves and contours of your ear canal. The result is something that’s comfortable, durable, and reliable enough to wear for hours without even thinking about it. The best part? Getting that perfect fit is quick, painless, and can be done easily during an in‑office appointment at Perth Hearing & Tinnitus Clinic right here in Perth! Here’s a behind‑the‑scenes look at how we create custom ear impressions and explain why each of these steps is so important.

Step 1: The Otoscopic Evaluation
Before Your Custom Earplug Appointment to ensure we can take accurate impressions for your custom earplugs, it’s important that your ears are free from excessive earwax before your appointment.
At the start of your visit, your audiologist will perform a quick otoscopic examination using a small lighted instrument called an otoscope. This allows us to check that your ear canals are clear and healthy, and suitable for taking ear impressions.
If we find excessive earwax during the examination, we won’t be able to safely or accurately take your impressions. In this case, we’ll ask you to have your ears professionally cleaned before booking a new impression appointment.
Having clear ear canals helps ensure:
- Accurate impressions for the best possible fit.
- A comfortable and safe impression-taking process.
- Custom earplugs that provide the protection and performance they’re designed for.
If you’re unsure whether you have a build-up of earwax, we recommend arranging an earwax assessment and/or removal before your custom earplug appointment. This can be done at your local GP or at a company such as Earworx in WA.
Step 2: Placing the Otoblock
Once your ear canal is cleared and ready, we gently place a tiny foam or cotton block called an otoblock into your ear. It’s attached to a small string so we can remove it easily later.
The otoblock sits deep in the canal, but not anywhere near the eardrum. It acts as a soft barrier to keep the impression material exactly where it needs to be. Most patients describe this step as feeling like a little bit of pressure, but not super uncomfortable.

Step 3: Mixing and Injecting the Impression Material
Next comes the part most people find fascinating: the impression material. We mix a two‑part silicone putty that begins to firm up as soon as it’s combined. Using a special syringe, we slowly and carefully fill your ear canal with the soft material until it reaches the outer ear.
As this is happening, you will probably feel a cooling sensation, a gentle fullness, and notice that the world suddenly becomes very quiet. This is completely normal; the material we use temporarily blocks sound, almost like being underwater.
Step 4: The Curing Process
Once the impression material is in place, you get to sit back and relax for 3-5 minutes while it cures. The silicone will firm up into a rubbery mold that captures every detail of your ear canal.
For musicians, vocalists, or anyone who uses their jaw frequently while working or performing, we may ask you to hold a small “bite block” between your teeth. This is designed to keep your jaw in a consistent position, ensuring your earplugs fit well even if you’re singing or talking.

Step 5: The Reveal and Next Steps
When the material has fully cured, we gently twist and remove the impression. It often makes a soft “pop” sound, which is a surprisingly satisfying moment for many of our patients.
After it’s removed, you’ll get to see a detailed replica of your ear canal. We send it off to a specialised lab where your custom earplugs are crafted from durable, medical‑grade silicone.
Turnaround time for this is typically 1–2 weeks, depending on the style you choose. There are a few to choose from, like musician filters, sleep plugs, swim plugs, hunting plugs, or industrial protection. If you’re not sure, don’t worry. We are here to help you choose the best option!
Are You Ready to Upgrade Your Hearing Protection?
If you’re ready to experience the next-level comfort of custom‑molded protection, we’d love to help! Call us at 08 9242 2208 to book your appointment today!

Working with the World’s Leading Hearing Manufacturers
At Perth Hearing & Tinnitus Clinic, we don’t just take impressions—we work closely with leading hearing aid and hearing protection manufacturers to ensure every custom product is tailored to your individual needs.
Whether you’re looking for custom hearing aid earmoulds, musician’s earplugs, industrial hearing protection or sleep plugs, we carefully select the most suitable manufacturer and product based on your lifestyle, hearing needs and preferences.
Because we partner with trusted manufacturers, you can be confident you’re receiving a high-quality custom solution designed for comfort, durability and optimal performance. Our team is here to guide you through the options, answer your questions and ensure you receive the best possible outcome—not just a product that fits, but one that truly works for you.


















