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The primary material should be 100% Food-Grade Liquid Silicone (LSR). Unlike standard PVC, high-quality silicone is hypoallergenic, odorless, and resistant to saltwater corrosion. For professional or technical diving, look for orthodontic designs that reduce jaw fatigue during long submersions. Ensure the material meets FDA or LFGB food-safety standards to prevent the leaching of toxins when exposed to varying water temperatures.
Most mouthpieces use a standard 1.1-inch (approx. 28mm) internal diameter for the attachment port, but it is vital to confirm compatibility with major regulator brands (e.g., Scubapro, Apeks, Mares). For specialized equipment, request CAD drawings or physical samples to test the fit. A secure fit is essential; the mouthpiece must have a deep groove for cable ties (zip-ties) to ensure it does not slip off the regulator air-intake during a dive.
Suppliers should provide CE Certification (EN 250:2014), which is the European standard for respiratory equipment. Additionally, verify ISO 9001:2015 for manufacturing consistency. For products sold in the US, compliance with California Proposition 65 regarding phthalates and lead content is highly recommended to avoid legal risks in the retail market.
Premium mouthpieces often feature bite-tab reinforcements to prevent 'chew-through' and extended palate support for better stability. Some high-end models are heat-moldable (custom-fit), allowing the diver to boil and bite the piece for a personalized fit. Budget options are typically thinner and may lack the UV-resistance necessary to prevent the silicone from becoming brittle over time.
Always request a Pre-Shipment Inspection (PSI) by a third-party agency. Specifically, instruct inspectors to perform a tension test on the bite tabs and a smell test to ensure no industrial chemical odors are present. Utilizing Made-in-China.com's Secured Trading services can provide an extra layer of protection, ensuring payment is only released upon confirmation of product quality.
Focus on tooling costs and mold ownership. If you require a custom ergonomic design, clarify who owns the injection mold after the initial production run. For bulk orders, negotiate a graduated pricing scale where the unit price drops by 15-20% as volumes exceed 5,000 units, and ask for a 2-3% defect allowance or spare units to be included free of charge.
Silicone is prone to attracting dust due to static electricity. Ensure the supplier uses anti-static individual polybag packaging. For international shipping, choose FOB (Free On Board) terms to maintain control over the freight forwarder and insurance. Avoid long-term storage in high-temperature containers during transit, as extreme heat can slightly deform the silicone shape if not packed in rigid outer cartons.
Check the HS Code (typically 950629) for your specific country to determine import duties. Be aware of Anti-Dumping Duties that may apply to certain rubber or plastic products in specific regions. Ensure all Country of Origin (COO) markings are clearly embossed on the product or printed on the packaging to comply with customs regulations and avoid costly clearance delays.
