Custom Hearing Ear Molds

Custom Hearing Ear Molds

Helping you Reclaim your Independence

Feel like you’re missing out on the conversation? Hearing problems can affect your personal and professional life, and even be a hazard to your own personal safety. It’s an isolating feeling when you’re unable to hear the world around you. Hearing loss is nothing to be ashamed of, and can actually be improved with a simple, unobtrusive hearing aid.

For over 15 years, Perfect Seal has been building stylish, high-quality hearing aids that use the best technology to help improve your life and reclaim your independence. Perfect Seal offers a wide variety of earmold styles for the majority of hearing aids on the market. We make them for Thin Tube hearing aids, RIC hearing aids, and BTE hearing aids. Perfect Seal stays a step ahead of all the latest hearing aid innovations by designing earmolds for even the newest technologies. Shop our selection and discover why Perfect Seal is the best in the business!

What Customers Have To Say

  • My doctor was able to take my molds and send them off to Perfect Seal for me. In no time I had the most comfortable hearing aids back.
    Benjamin, OK

Standard Earmolds

    A receiver mold is generally used to mount the receiver of a body aid. This earmold fills all the contours of the external ear for a tight seal. Available in both hard and soft materials.
    This is the same full bodied earmold as a receiver mold. A tube is used instead of a snap ring.
    A full shell earmold is similar to a receiver mold taken one step further. The receiver plate area of the full shell mold has been belled out for cosmetic reasons. The quality acoustic seal and design allows the full shell to work in all cases.
    A half shell earmold is recommended for use by patients who are troubled with reduced dexterity. The top portion of the earmold has been removed creating ease in insertion and removal. The half shell mold still gives a good acoustic seal as well as good retention in the ear.
    The canal style earmold is quite appealing cosmetically. The use of our P.S. 2000 material will aid in retention and seal. A long canal is essential in this style of ear mold.
  •  CANAL With LOK
    CANAL With LOK
    This canal style mold has an additional lower concha rim for extra retention. The added rim also simplifies the insertion and removal of the mold.
    The cosmetics of the skeleton mold make it our most popular style. The center of the concha has been removed, leaving a thin rim. This allows the skeleton style mold to be cosmetically concealed and still allow for good retention.
  • 3/4 SKELETON
    3/4 SKELETON
    The 3/4 skeleton is exactly the same as the skeleton mold with the exception of the concha rim. In this version, the concha rim has been reduced for pinna shapes that may make insertion and removal somewhat difficult.
    In this style most of the concha rim has been removed to facilitate insertion. This is important in cases of reduced dexterity or extremely hard ear texture and is cosmetically appealing.
    Great for problem fittings in which mandibular movement causes problems with the seal and/or comfort. The aperture of the mold is hollowed out allowing it to “flex-in” with the changing contours of the ear canal during jaw movement. Available in full shell, half shell, and canal style molds. Specify “Flex-In FS” for full shell, “Flex-In HS” for half shell and “Flex-in” for canal style. ONLY available in P.S. 2000.
    The canal portion of the power mold is small. It is designed just large enough to accommodate the tubing, therefore, reducing any feedback caused by jaw movement.
    Like Flex-In molds, the hollow point is great for mandibular movement. The tip of the canal is hollowed out allowing it to flex in with jaw movement. Because the tip of the mold is bored out there is also a slight increase in the high frequencies. This mold is only available in P.S. 2000.

Colors & Tinting

  • Glow In the Dark
    Glow In the Dark
    Add excitement to earmolds with our Glow in the Dark additive. We use the brightest, longest lasting phosphorescent materials available. Choose from green, blue, violet, or red.
  • ConSeal
    ConSeal molds are great for those who require a nice cosmetically, appealing mold. Made with tiny flesh like nylon fibers, these molds seem to disasappear in the ear. A matte finish pink tube couples the mold to the hearing instrument.
  • Choose Your Color
    Choose Your Color
    From wild to mild, we can tint earmolds to almost any color under the sun. Choose up to three different colors to swirl together to add style and uniqueness to your clients mold.
  • Glitter Molds
    Glitter Molds
    Glitter has become a very popular choice for children. The sparkle effect from the molds instantly draws attention and fits directly to their style.


Most all earmold tubing, at one time or another, will require replacement. The following steps will provide a guide to help you with the retubing of various earmold materials and tube styles.


1. Remove th old tube lock tube by carefully pulling it out.
2. Insert the new tube lock tube into the mold.
3. With an applicator tool, or similar probe device, push the lock to the proper depth.
4. Trim the tube flush with the end of the canal.


1. Remove the old tube by carefully pulling it out.
2. Insert the new tube lock plus tube.
3. Pull the quilled end of the tube until the plastic lock is properly seated, and the outer ring is flush against the mold.
4. Trim the tube.


1. Remove the old tube. There are two ways to do this: (a.) cut the tube flush against the mold, then with a high speed motor, or Dremel, burr out the remaining tube from the sound borer (b.) using a small screw driver or similar tool, insert the flat blade end between the mold and tube. Slide it all the way around the mold, cutting through the old glue. Now pull the tube out.
2. Insert a new coated tube (or switch to a Tube Lock plus and refer to the proper instructions).
3. Inject RTV silicone around the tube and let it sit for at least 15-20 minutes.
4. Trim the tube.


1. Remove the old tube. Pull the old tube out if possible, if not, cut it flush with the mold and use a reamer to remove the remaining tube.
2. Double check to make sure the sound bore is free from obstruction.
3. Use a pipe cleaner coated with tubing cement to coat the inside of the sound bore.
4. dip the quilled end of the tube into the tubing cement for approximately three seconds and quickly insert into the mold.
5. Blow air through the tube removing any remaining cement and trim the tube.


1. Remove old tube using the above steps one and two.
2. Cut tube to desired length. If the tube is cut where there is a change in direction of the sound bore, make sure the tube is cut at an angle that allows an unrestricted flow of sound.
3. Use a pipe cleaner coated with tubing cement to coat the inside of the sound bore.
4. Dip the cut end of the tube into the cement for approximately three seconds then quickly insert into the mold.
5. Blow air through the tube to expel any remaining cement.


1. Hold the CFA connector as close to the ear mold as possible. Twist it back and forth while pulling, until it is removed.
2. To insert, twist it back and forth while pushing in.


1. Pull the old tube off the end of the elbow while the elbow is still in the mold.
2. Add a new piece of tube to replace the old one.

Earmold Modifications

In the event that an ear mold needs to be adjusted, the following instructions will serve as a guideline.


1. Check the ear mold canal for a bulbous portion. This would be an area where the canal gets wider or larger in diameter toward the end of the canal.
2. Either shorten the canal or grind the problem area.
3. Smooth out all ground areas, and round down any sharp edges.


1. Determine the location of the problem. Use a Q-Tip or probe in the patients ear to pinpoint the exact location of the problem.
2. On the corresponding spot on the ear mold, slightly relieve the material in that spot. Use of an ear mold lubricant will aid in ease of insertion of the mold on the tender areas.

HINT: Use blue flex stone with soft materials like PS 2000.


Acrylic or any Preferred Material – Adult General Purpose
Vyno Flex – Child General Purpose
P.S. 2000 – Higher Gain Aid
Heat Cure Acrylic, P.S. 2000 – Allergies
Acrylic W/Soft Canal, Vyno Flex, P.S. 2000 – Facial Flex Problems
Any Soft Material – Hard Ear Texture
Any Hard or Firm Material – Flabby Ear Texture


Material Index

Lucite – Lucite is a clear, hard plastic that can be tinted to any color to fit your needs. Earmolds made of lucite are easy to insert and remove. Lucite earmolds should be limited to use with instruments with a gain up to 55 dB. A non-allergenic formula is also available.

Ultra Soft – Ultra Soft is a flexible acrylic that softens in the ear when it reaches body temperature. This material can be added to a lucite body, providing a soft canal for patient comfort.

Vyno flex – Vyno flex is a specially compounded vinyl material which is fairly rigid, but softens noticeably at body temperature. It is a non-toxic material that can be tinted to your clients needs. Because of it’s softness and low cost, Vyno flex is ideal for use by children.

P.S. 2000 – P.S. 2000 is a medical grade elastomer, which is non-toxic and great for clients with allergies. Earmolds made of P.S. 2000 work very well with high gain instruments and will never shrink. This material can be tinted to your clients needs.

Acoustic Options

  • Venting
    Venting, which affects frequencies from 1000Hz and below.

    External vent - This is a channel that is routed along the outside of the earmold.
    Diagonal vent - A diagonal vent joins the sound bore in the earmold. This vent allows for a higher chance of feedback, and a reduction of high frequency gain. It is used when size doesn’t allow for a parallel vent.

    Parallel vent - The vent hole runs parallel with the sound bore in a parallel vent. Low frequencies are reduced, yet high frequencies are not affected. This is the preferred vent style.

    S.A.V. (Select-A-Vent) - The Select-A-Vent system allows the dispenser to choose what size vent to use. In this system, a tree of five vent sizes and one solid plug gives the dispenser the option of easily changing vent size. If you find that one vent size is wrong, it can be replaced easily without modification to the earmold.
  • Dampers
    Damping, which affects frequencies between 1000-3000Hz.

    Lambs Wool - The first damping material used with hearing aids. The density of the lamb’s wool determines the damper effect. It is effective, but not easily controlled. Sintered Steel Pellets - A series of steel pellets with different degrees of porosity which give different levels of acoustic resistance.

    Star Damper - Star dampers are made of silicone and have no moisture build-up problems. They must be cut to different lengths and measured to know the exact effects.

    Knowles Acoustic Dampers - These dampers are a refinement of acoustic control. Each damper is in a metal housing with a color coded plastic screen at one end. There are six dampers available: 680, 1000, 1500, 2200, 3300, and 4700 in Ohm values. Knowles Acoustic

    Dampers are the most convenient to use, but moisture build-up can be a problem
  • Horn Effects
    Horn Effects
    Horn effects, which affect the 3000Hz and above range.

    In acoustics, the belling of a tube will enhance high signals passing through the tube. If a tube narrows toward the end, the high frequencies will then be reduced. Many of today’s hearing instruments produce high frequency signals out to 7000-9000Hz. Therefore it is important that the tube and earmold not restrict the resonance in the sound channel and cut off the high frequencies. Thus, in many fittings, a horn of some kind may be essential.

CFA Systems

  • Small Open Bore
    Small Open Bore
    • High frequency emphasis
    • Some low end amplification
    • Very smooth frequency response curve
    • Small vent is most commonly used
  • Belled Bore
    Belled Bore
    • Very smooth frequency response curve
    • High frequency emphasis
    • Low end amplification
    • No vent,very small vent is commonly used
  • Half Bored Out
    Half Bored Out
    • High frequency emphasis
    • Good performance when vented
    • Suitable to HF losses
    • Usable with HF aids
  • Large Open Bore
    Large Open Bore
    • High frequency emphasis
    • Little low frequency amplification
    • One of most commonly used CFA molds
    • Small vent is most commonly used
  • Non-Occulding
    • High frequency emphasis, smooth curve
    • Non-occluding long canal
    • Used for those with tolerance problems,
    • Low frequency noise problems
  • Reverse Curve
    Reverse Curve
    • Will cut highs 8 - 10dB
    • Increase lows slightly
    • Reverse curve adapter attached

Specialty Earmolds

    Telecommunication molds incorporate a coiled tube that carries sound from a hidden receiver to the ear. They are ideally used by newscasters, policemen, security agents, etc.
    Pilot molds are usually made of lucite, and come with a PP hanger bar to hold the receiver.
    Stethoscope molds are ideal for anesthesiologists, doctors and nurses, who want something other than the standard uncomfortable stethoscope.
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