Seacure Hi-Flow Custom Regulator Mouthpiece r401-CLR 034019

Video: Seacure Hi-Flow Custom Mouthpiece Video Review
Mfg Part #: MP I

Seacure Hi-Flow Custom Regulator Mouthpiece

MP IV Black Add $5.96
MP V Black Add $19.96

  • Brand new & completely redesigned
    Not like most other sites that sell the old discontinued model
  • Free storage plug protect regulator from debris and unwelcome guests
  • Improved expanded port provides even more air flow
  • Onepiece sealing and molding attachment
  • Attachment protects from debris from getting regulator during storage
  • Offset for both upper and lower jaw
  • Seacure MP I: Fits standard orifice regulators (size 1-1/8" x 1/2")
    Apollo; Atomic(manufactured pre 2005); Beuchat (Evolution, Iceberg & Nitrox, VX4, VXT8, VXT Octo); Bridgestone; Cressi-Sub (except Ellipse); Dacor (after 1992); Dive Buddy (D.B.); 1st Diving Systems (IST)(Except Proline); NDS; Ocean Master; OceanQuest, Pro Sub (Avalon); Saeko-line; SAS; ScubaPro(except A700, C200, C300 uses MP II); Seac; Sherwood (Most early models/Brut/Shadow/Magnum II/Pre 1992 Blizzards); Spare Air; Subgear 'R' Series; Tabata/TUSA (except Imprex)
    • Snorkels – SeaCure fits many removable mouthpiece snorkels on the market. AMICO, CORAL, CRESSISUB, DACOR, DIVE BUDDY, KAPITOL REEF, NETEX, REEF BUDDY, SEAQUEST
  • Seacure MP II: Fits intermediate size air orifice regulators (size 1-3/16" x 5/8")
    Abyss Explorer; Aeris; Aqua-Lung newer (Titan, Legend, Kronos); Atomic (Post 2005 larger orifice); Beuchat (VS8, VS3, VS4, VX10); Dacor (Eagle, Viper); Dive Rite (not the Jet Stream 4500); Forte; Genesis (OZ, GS2000, GS2000-ICE, Yukon, Atlas); Edge, Epic, Halcyon Rebreather; Hog, Hollis (except 500SE)Innerspace Megalodon rebreather; IDI (Osprey is MP I) Mares newer models(except MR-12-II, III, IV or V); Ocean Edge/Ocean Reef; Oceanic (except Zeta); Scubamax; Seaquest; Sea Elite; Sherwood (Maximus, Oasis, 2/92 and newer Blizzard, SR1, SR2); Sporasub; Subgear 'SG' Series; Tigulio, XS Scuba
  • Seacure MP III: Same diameter as a size 1 with double ribbing
    Aqua-Lung (U.S. Divers) Plastic Regulators (except Titan, Legend); Aquatec; Sea Mech
    • Snorkels – AQUA LUNG Impulse, SEAVISION
  • SeaCure MP IV (size 1-5/16 x 11/16″)
    Apeks, Hollis 500SE and Zeagle regulators and many rebreathers, including Golem Shrimp BOV, Hollis Prism, ISC Megladon, Kiss Gem, Poseidon (snug fit) and Titan
  • SeaCure V (size 1-7/16 x 13/16″)
    Dive Rite Jet Stream 4500, Poseidon

SeaCure Custom Mouthpiece - Regulator Size Chart

Customer Reviews for Seacure Hi-Flow Custom Regulator Mouthpiece:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 39 reviews.

Rating: Great
Reviewer: regina m roberts  -  View all my reviews
I have been using these mouthpieces for 15 years. Yes they do wear out eventually but well worth the comfort. I have over 1200 dives.

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Rating: Worth its weight in gold
Reviewer: Steven Field  -  View all my reviews
I was having difficulties with my standard regulator mouthpiece due to various anatomical differences in my mouth. The standard one would cut into my mouth, cause fatigue and pain, and after two dives a day I was done. The custom regulator, however, has changed all that - I love it! Easy to custom fit, feels great in the mouth, and best of all no fatigue in the jaw - I feel I could do 10 dives in a row and still have no pain - get one, youll be glad you did!

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19 out of 35 people found this review helpful.

Rating: Mouth Piece
Reviewer: Tim Scott  -  View all my reviews
purchased the seacure hi-flow mouth piece to put on a new sherwood sr1 and it works great and very comfortable once you get is molded to your mouth. when the direction says not to it in the boiling water, it means it as i ruined the first one i attempted to mold. i used the yellow retention piece that is shipped with it to be used during storage (and the directions also say to use it during the process of dipping the mouth piece in the boiling water). well, i did as the direction stated and when the mouth piece heat up the orfice expanded causing the mouth piece to fall into the water ruining it. fyi - dont follow the directions and use tongs or equivalent for the process.

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111 out of 225 people found this review helpful.

Rating: Mouth Piece
Reviewer: Charles T.
Great mouth piece, it is custom fit and breaths very well. No more fatigue.

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13 out of 25 people found this review helpful.

Rating: Worth the money - your mouth will thank you
Reviewer: Betina D.
loving the new mouthpiece! its more expensive than a standard mouthpiece but well worth it as far as im concerned. its easy to custom fit, the instructions are simple and accurate (i hate it when instructions are in chinese or skip a vital step), and its very comfortable while diving. i had tried and rejected three different sized mouthpieces before i found the seacure i gave them 15-20 dives before i tossed them - yes, they worked but they were never quite right. too big and my face felt stretched or too small and my jaw hurt from clamping down on it. ive already ordered a second one for my snorkel - measure carefully if you do this so you get the right size. seacure i fits 1 1/4" x 3/4", seacure ii fits 1 7/16" x 7/8".

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74 out of 150 people found this review helpful.

Rating: EXP Diver
Reviewer: Allan Keffer  -  View all my reviews
Works great, easy to set up, less stress on the jaw.

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45 out of 89 people found this review helpful.

Rating: Seacure mouth piece
Reviewer: Chris Larson
Love these mouth pieces. I have them on both of my regs,and they definitely reduce mouth fatigue. I even had to refit one after some dental surgery and it came out just fine. Easy to fit and nice and secure.

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103 out of 206 people found this review helpful.

Rating: easy to use
Reviewer: Jane V.  -  View all my reviews
The mouthpiece makes my jaw tension less. Set up was easy.

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102 out of 202 people found this review helpful.

Rating: Worth its weight in gold.
Reviewer: Lance Morgan
This is one of the best purchases I have made in scuba equipment. Last year I had to cut my diving in Bonaire short after only 5 dives because my jaw ached and popped so badly. I purchased this mouth piece and just returned from Roatan and aft 15 dives there was not even a hint of jaw ache or popping. Great product!

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92 out of 178 people found this review helpful.

Rating: Best Mouth Piece Ive ever used
Reviewer: Scott Michael  -  View all my reviews
I love Seacures. When I got my new ScubaPro, I was upset that I couldnt get my old Seacure to fit. Well the stiffness of the material necessitates the 3 different sizes. My Sherwood took a II and my ScubaPro needs a I. Oh well, If I switch back and forth, I wont need to change the mouth piece. Just be sure and READ the directions when you custom fit it. Biting too hard is about the only incurable sin.

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304 out of 652 people found this review helpful.

See all 39 customer reviews...

Questions and Answers for Seacure Hi-Flow Custom Regulator Mouthpiece:

  • Wen:

    Hi, Im using Apeks Flight Regulator, which seacure MP fits in? thanks!

    Darrick  (Certified Scuba Instructor at

    Hello Wen, you would be a type 2 mouthpiece.

  • Craig:

    What Seacure mouth piece for Scubapro 109 Adjustable, the MP I?

    Bob  (Certified Scuba Instructor at

    All Scubapro regulators except A700, C200, C300 use the MPI

  • Lisett:

    Hi. Id like to change the mouth piece for my atomic B2 regulator. What size would it be on a seacure hi-flow custom mouth piece? Thanks!

    Darrick  (Certified Scuba Instructor at

    Hello Lisett, if that regulator is before 2005 you will need the type one. If it is older than 2005 you would need the type two.

  • Antonio:

    Do you already have the Seacure IV for apeks regs available ? When will you have them in ?

    Bill  (Certified Scuba Instructor at

    Currently we do not carry the VI.

  • Matt:

    Which Seacure model does the Atomic T2X fit?

    Aaron  (Certified Scuba Instructor at

    Hi Jim, You will want the Seacure MP II.

  • Jan:

    I am buying this for my brother in law, he has a halcyon halo 2nd stage regulator, which mouthpiece would fit in this please?

    Darrick  (Certified Scuba Instructor at

    Hello Jan, you would need the type II version for that 2nd stage.

  • Bradd:

    For a Sherwood SR2 regulator do I need the Secure I or II?

    Bob  (Certified Scuba Instructor at

    It is a type II

  • Jon:

    Will any of these fit a Poseidon Jetstream?

    Darrick  (Certified Scuba Instructor at

    Hello Jon, you are looking for the type 3.

    Darrick  (Certified Scuba Instructor at

    Hello Jon, you are looking for the type 3 version of this mouthpiece to fit your Poseidon JetStream.

  • Rick:

    I am using an Atomic Z2X - Which type would I use? The reg is appx 3 years old.

    Bob  (Certified Scuba Instructor at


  • Murry:

    Which mouthpiece for Aqualung Mikron 2nd stage?

    Darrick  (Certified Scuba Instructor at

    Hello Murry, you would need to order the Type 3 version.

  • Andrew:

    hi there, why does your table for matching regulators differ from the one on the seacure website?

    Arthur  (Certified Scuba Instructor at

    Good morning, it looks like seacure just updated their site. definitely go off theirs. we will be updating ours soon.

  • Lois:

    Hi have an Apeks Reg and on Seacure site it says type 4 fits yet you suggested type 2 to another Apeks owner??? Which one will fit?

    Darrick  (Certified Scuba Instructor at

    Hello Lois, we do not show they make the type 4 anymore. The newer version only come in 3 types and for the APEX line you would need a type 2.

  • Brittany:

    I have the Genesis GS2000 Regulator. Which size would work for this reg? Thanks.

    Darrick  (Certified Scuba Instructor at

    Hello Brittany, you would want to get the TYPE II version. That is the style that is designed to fit your regulator.

SeaCure Custom Mouthpiece
Introducing the new “X Type” Model with “Bite Limiter” for better molding & more comfort!

Made in the U.S.A.

THE ULTIMATE DIVING MOUTHPIECE – THE RESULT OF 20 YEARS in the moldable mouthpiece business! SeaCure was created by an orthodontist, is guaranteed to fit YOU – PERFECTLY and is the only moldable “and remoldable” mouthpiece offset for both the upper and lower jaw positions.

Now available in NEW SIZES to fit Apeks, Poseidon and rebreathers!

The new and improved X Type SeaCure Custom Mouthpiece offers a totally new X shaped profile, which significantly reduces bulk, virtually eliminates gagging and improves molding by earlier engagement of the teeth during closure. The new X Type also includes an improved one piece molding and sealing attachment. The attachment is used in the molding process and then to keep debris out of the regulator. It now provides a NEW bite limiter which eliminates the possibility of over closure during the heat molding process, thereby preventing reduced air flow during diving.

About SeaCure Mouthpieces
Divers using SeaCure Custom MouthpiecesSeaCure mouthpiece was invented by orthodontist and TMJ (jaw joint) expert, Dr Randall Moles. Back in the early 90s, he had a TMJ patient who asked for his advice. She was a diver and was having major problems clenching the standard regulator mouthpieces while diving without bad jaw pain and headaches. But she loved to dive! What could she do? Dr Moles began to work on a moldable mouthpiece that would “hang on” to the teeth without the constant clenching required by the standard mouthpiece. It worked for her and she was very grateful. And, it has “worked” for thousands of divers since. Many divers do not know what is giving them headaches on dive trips, and once they are using a SeaCure, they no longer have them. Even divers without a jaw problem find a SeaCure mouthpiece to be very, very comfortable. They also find it to stay in with no effort at all, even, we’ve been told, while asleep!

SeaCure has improved on the original design with several models over the 20+ years, the newest being the X Type.

Electromyographic Test Results
Electromyographic tests of divers in the laboratory using both conventional and SeaCure Custom Mouthpieces showed that significantly less muscle effort was required to retain a SeaCure mouthpiece with regulator in the mouth than was needed to retain a conventional mouthpiece/regulator unit. Result: incredible comfort. See the Electromyographic Test Results here.

SeaCure Custom Mouthpiece Design Concept
Conventional scuba mouthpieces currently on the market all employ bite lugs which involve only the front teeth and must therefore use the front of the jaw to retain the mouthpiece/regulator unit during diving. In addition, all conventional mouthpieces use an extremely flexible material in order to adjust to all the various configurations of teeth and jaws required by the “one-size-fits-all” concept which, until now, was the entire mouthpiece market.

SeaCure Mouthpiece, being moldable, cannot only perfectly fit every individual mouth but can actually enter the mouth all the way to the rear of the jaw employing all of the diver’s teeth. The result is that the large rear teeth and tremendous mechanical advantage of the back of the jaw can now be employed to retain the mouthpiece/regulator unit during diving, greatly reducing the required muscle effort. In addition, because the SeaCure mouthpiece has to fit only one mouth, it can be constructed in a much more sturdy design allowing transfer of the regulator/hose load to the rear of the jaw. Because it is not as flexible as conventional mouthpieces, SeaCure greatly reduces gum abrasion.

The significant reduction in muscle effort required to retain the mouthpiece/regulator unit while diving has been confirmed with electromyographic tests. Test data are available which indicate a reduction of muscle effort in the range of 33% to 59% depending upon the individual diver.

Because of its more rigid design, the SeaCure mouthpiece requires slightly more effort to place it on the regulator. Once the regulator ridge is seated into the groove designed inside the SeaCure orifice, accidental separation from the regulator is extremely unlikely.

Complete molding instructions which have proven totally satisfactory for individuals to mold the unit themselves are included with each unit. The general concept is that a scissors is used to trim unnecessary material from the unit to fit the size of the specific mouth/jaw. Then boiling water is used to soften the mouthpiece bite wings only, to allow molding to precisely fit the individual’s teeth, gums, and jaw. The unit is REMOLDABLE so that if not at first satisfied, or dental work changes the bite, it can be remolded and adjusted to accommodate the changes for comfort.

View all Seacure Regulators

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