Decibullz Custom Molded Earplugs Instructions and VideoUpdated 15 days ago
Custom Molded Earplug NRR 31 Instructions PDF
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Decibullz Custom Molded Earplug Instructions
Model: PLG1
WARNING
Improper fitting or misuse can reduce the effectiveness of earplugs and lead to hearing loss or injury.
Test earplugs in progressively louder environments.
Do not enter high-noise areas unless you're confident the fit is secure.
Always wear hearing protection in loud environments.
Handle boiling water and hot earpieces with caution to avoid burns.
Wait until earpieces cool to just above room temperature before inserting.
Remove all ear piercings before molding.
Check tips before every use to ensure they are securely attached.
Remove earplugs slowly to break the acoustic seal.
What’s Included
1 pair Thermofit® Custom Molds (Left & Right)
2 Back Plugs
Max Isolation Foam Tips – Medium (NRR 31dB)
Triple Flange Silicone Tips – S/M/L (NRR 24dB)
Drawstring Carrying Pouch
Materials Needed (Not Included)
2 Ceramic or Glass Cups
Kettle or Microwave
Boiling Water
Timer
Mirror (recommended)
Metal Spoon
Molding Instructions
STEP 1: Heat the Water
Microwave: Fill two cups (ceramic or glass) with 3–4 inches of water and bring to a boil.
Kettle: Boil water and pour 3–4 inches into each cup.
Do not microwave the molds. Do not use plastic, paper, or Styrofoam cups.
STEP 2: Soften the Molds
Place one mold per cup (they will stick together if placed together).
Let molds sit in boiling water for 5 minutes.
STEP 3: Prepare for Molding
Remove a mold using a metal spoon.
Let it cool for 30 seconds.
Attach back plug and silicone tip to mold.
Check that the tip is securely attached by gently pulling.
STEP 4: Insert into Ear
Insert the mold into your ear.
Press firmly on the back plug to ensure a tight fit.
Ensure the tip is deeply seated and aligned with the ear canal.
STEP 5: Shape the Mold
Smooth the mold into the concha (bowl) of your ear using your fingertip.
Avoid using fingernails to prevent indentations or uneven texture.
STEP 6: Secure the Seal
While cooling (approximately 5 minutes), press the back plug every 30 seconds to help create a better acoustic seal.
STEP 7: Remove and Finalize
Remove mold after 5 minutes.
You may now swap the silicone tip for the Max Isolation Foam Tips for higher protection.
STEP 8: Repeat
Repeat steps 2–7 for the other ear.
Testing Your Earplugs
Talk Test: Your voice should sound deeper or muffled in both ears when wearing earplugs.
Cup Test: While wearing the earplugs, cup your hands tightly over your ears. If sound changes significantly, the seal may be incomplete.
Noise Environment Test: Start in a quiet room and gradually move to louder environments. If things sound too loud, recheck fit or re-mold.
Molding Tips for Best Fit
Use a smaller silicone tip during molding for easier insertion.
Re-mold if the fit feels uncomfortable or incomplete.
Each ear may require a different size tip.
Insert the tip deeply first, then mold the outer material.
If the mold is still hard in the center after heating, place it back into hot water until fully pliable.
Molds can be remolded as many times as needed.
Cleaning & Maintenance
Wash molds with mild soap and warm water.
Rinse thoroughly and dry completely.
Inspect molds and tips before each use for damage or loose components.
Store away from direct sunlight or heat sources above 120°F / 49°C.
Noise Reduction Ratings (NRR)
Tip Type | NRR |
Max Isolation Foam Tips | 31 dB |
Triple Flange Silicone | 24 dB |
Federal law prohibits removal of EPA label prior to purchase.
Additional Warnings
Keep away from children and pets. These can pose a choking hazard.
Do not use if you have drainage from your ear or a perforated eardrum unless cleared by a physician.
Avoid storing in hot cars or direct sunlight to prevent deformation.
Satisfaction Guarantee
If you're not satisfied with the product or your molding results, please contact our support team for assistance or replacement.
Website: www.decibullz.com/support
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