Seacure II Mouthpiece — Custom comfort that locks your regulator in place.
The Seacure II is a moldable regulator mouthpiece designed to fit your regulator, not your jaw size. Select the correct version based on regulator orifice dimensions and brand (see chart). Once molded, the mouthpiece conforms to your bite for a secure fit that reduces jaw fatigue and keeps the second stage steady even on long dives.
Key Benefits
- Personalized fit Boil-and-bite molding creates a custom impression
- Secure hold Keeps regulator stable, reducing jaw fatigue and bite pressure
- Wide compatibility Five sizes fit virtually all major regulators
- Durable Made of long-lasting medical-grade material
Key Specifications
- Material Medical-grade thermoformable polymer
- Fit Method Boil-and-bite molding at home
- Compatibility Most modern scuba regulators (see size chart)
- Weight ~1.5 oz
Size Guide (choose by regulator)
| SeaCure Size | Regulator Orifice (H × W) | Examples (not exhaustive) | Notes |
|---|---|---|---|
| #1 | ~1-1/8" × 1/2" | Aqua Lung older Conshelf; Atomic pre-2005; Scubapro S600/S560 legacy; Sherwood early models; Cressi XS Compact (snug); Spare Air | Common legacy regs |
| #2 | ~1-3/16" × 5/8" | Aqua Lung Calypso/Core/Legend/Mikron/Titan; Atomic post-2005 (Z2, B2, T3, etc.); Scubapro A700/C300/G260/R195/S620Ti/D420; Oceanic Alpha 10; Hollis (except 500SE); Dive Rite; Zeagle F8 | Most modern second stages |
| #3 | Same as #1; dual ribs | Aqua Lung Micra; Aquatec | For regs without conventional lips |
| #4 | ~1-5/16" × 11/16" | Apeks; Aqua Lung Titan LX; Hollis 500SE; DGX XTRA; CCR/BOVs (Golem, Hollis Prism, ISC Megalodon, KISS) | Larger-orifice designs |
| #5 | ~1-7/16" × 13/16" | Poseidon; Poseidon SE7EN & VI CCR; Divesoft BOV (snug) | Largest regulators |
How to Mold Your Seacure
- Bring a small pot of water to a boil, then remove from heat.
- Submerge the mouthpiece for ~30 seconds to soften.
- Carefully remove (use tongs) and shake off excess hot water.
- Place the mouthpiece in your mouth, insert regulator, and bite gently while pressing lips and tongue to shape.
- Hold for ~1 minute, then cool in cold water to set.
- If needed, remold by repeating the process.
The Seacure II transforms any regulator into a custom-fit second stage—delivering less jaw fatigue, better seal, and a more secure hold from your very first dive.
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