Earpiece Guide
At last count, Westone has made over 10 million earpieces. Even so, we approach each earpiece as if it is the most important one we have ever made. While hearing care is indeed a science, making a great earpiece is still an art. No one has yet come up with an acceptable substitute for the sensitivity of the human hand, the experience of the human mind, or the judgment of the human eye.
Westone makes custom earpieces for virtually every application you will encounter. If you're not certain which version might be the best choice for your patient, call us. Our technical support staff (1-800-525-5071) can help you select the style and material that is most appropriate.
Conventional Earpieces
![]() Style No. 1 Applications (Snap ring) Body instruments, auditory trainers and stethoscopes (with an Adapt-a-scope adaptor), listening molds, communications. Works with some StarSet®, Plantronics®, and Telex® headsets Fitting ranges 1, 2, 3, 4, 5 (depending upon acoustic modifications) Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, W-1, W-1 DisappEar, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications Large bore, small bore, fishmouth, vent Options/accessories Adapt-a-scope, male adapter, colors, glitter, wire retention adapter, venting, initials |
![]() Style No. 2 Applications (Skeleton) Amplification, telecommunication, teleprompter, law enforcement, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 3, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent Options/accessories Colors, glitter, venting and tube options, initials, wire retention adapter, T-Mic |
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Style No. 3
Applications (Semi-skeleton) Amplification, telecommunication, teleprompter, law enforcement, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 3, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent Options/accessories Colors, glitter, venting and tube options, initials, wire retention adapter |
Style No. 3 Inverted
Applications (Semi-skeleton) Amplification, telecommunication, teleprompter, law enforcement, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 3, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent Options/accessories Colors, glitter, venting and tube options, initials, wire retention adapter |
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Style No. 4
Applications (Canal) Amplification, communications, teleprompter, Secret Service, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 3, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, W-1, W-1 DisappEar, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent Options/accessories Colors, glitter, venting and tube options, initials |
Style No. 4 (KC) Applications (Canal) For cases of pronounced mandibular action and/or severe feedback Fitting ranges 4, 5 Available materials Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble Modifications Pressure vent only Options/accessories Colors, initials, venting (pressure) |
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Style No. 5
Applications (Canal lock) Amplification, communications, teleprompter, law enforcement, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent |
Style No. 6
Applications (Shell) Amplification, communications, teleprompter, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, W-1, W-1 DisappEar, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent Options/accessories Colors, glitter, initials, venting and tubing options, wire retention adapter |
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Style No. 6 Thick
Applications (Thick shell) Amplification, communications, teleprompter, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, W-1, W-1 DisappEar, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent Options/accessories Colors, glitter, initials, venting and tubing options, wire retention adapter |
Style No. 8
Applications (Half shell) Amplification, communications, teleprompter, stenotic ear opener (order "ear opener" on the comment line of the order form, available in Acrylic only) Fitting ranges 1, 2, 4, 5 Available materials Acrylic, Acrylic with Flex Canal, Acrylic with hard or soft e-Compound canal, Acrylic DisappEar, FIT, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, W-1, W-1 DisappEar, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, small bore, fishmouth, vent, power mold, cut back vent Options/accessories Colors, glitter, initials, venting and tub-ing options, also available as a half-shell (8-Thick) |
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Style No. 10
Applications (Acoustic modifier) Normally used for mild high-frequency loss, comes standard with open bore and MVP (not guaranteed against feedback) Fitting ranges 3 Available materials Acrylic, Acrylic with Flex Canal, Acrylic DisappEar, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA Options/accessories Colors, glitter, tubing options and initials |
Style No. 12
Applications (Non-occluding) For high-frequency losses, Tinnitus Masker, open fit hearing instruments, CROS and BICROS fittings, open platform fittings, and cochlear implants (not guaranteed against feedback) Fitting ranges 2, high-frequency loss Available materials Acrylic, Acrylic DisappEar, Formula II, Formula II Clear, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications CFA, large bore, MVP Options/accessories Colors, glitter, tubing options and initials |
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Style No. 13
Applications (Non-occluding) For high-frequency losses, Tinnitus Masker, open fit hearing instruments, CROS and BICROS fittings, open platform fittings, and cochlear implants (not guaranteed against feedback) Fitting ranges 2, high-frequency loss Available materials Acrylic, Acrylic DisappEar, Formula II, Formula II Clear, Rx, Superflex, Neon Colors, Vinyl Marble, OtoBlast, OtoBlast DisappEar, Cat Eyes Modifications None Options/accessories Colors, glitter, tubing options and initials |
Style No. 14
Applications (Non-occluding) For high-frequency losses, Tinnitus Masker, open fit hearing instruments, CROS and BICROS fittings, open platform fittings, and cochlear implants (not guaranteed against feedback) Fitting ranges High-frequency loss Available materials Acrylic, Acrylic DisappEar Modifications None Options/accessories Colors,initials |
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Style No.15
Applications (Free field) For high-frequency losses, Tinnitus Masker, open fit hearing instruments, CROS and BICROS fittings, open platform fittings, and cochlear implants (not guaranteed against feedback) Fitting ranges High-frequency loss or as a retention mold for cochlear implants Available materials Acrylic, Acrylic DisappEar Modifications CFA Options/accessories Colors, initials |
Style No. 52 Janssen Mold
Applications (Non-occluding) Replicates a tube-only fitting; also used with high-pass earhooks (not guaranteed against feedback) Fitting ranges N/A Available materials Acrylic, Acrylic DisappEar Modifications None Options/accessories Colors, initials |
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Style No. 54
Applications (Non-occluding) Delicate earpiece, designed for use with ER-12-1 earhook (not guaranteed against feedback) Fitting ranges N/A Available materials Acrylic, Acrylic DisappEar Modifications None Options/accessories Colors, initials |
Style No. 94
Applications (Canal) For use with ReSound® Flex Vent System, Canta 7™, Metrics 770 D™, Air™ hearing instruments Fitting ranges High-frequency loss Available materials Acrylic, Acrylic DisappEar Modifications None Options/accessories Colors |
What is a Custom Earpiece?
Westone hearing protection products are molded from an impression taken directly from your ear.
Our precise, custom-fit earpieces provide comfortable and highly-effective sound transmission to the ear for a multitude of applications. Our wide variety of custom-fit hearing protection products protect people in work, recreation and entertainment environments from an increasingly noisy world.

















