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In the world of high-end skincare and pharmaceutical packaging, the bulb is far more than just a cap—it is the functional engine of the entire dropper system. Our multi-material bulb series is specifically engineered to solve the industry's most persistent pain point: chemical ingredient interaction. Whether you are bottling volatile essential oils or high-viscosity serums, our bulbs ensure formula integrity and a premium user experience.
We offer a range of high-performance elastomers to ensure total compatibility with your unique formulation, preventing the common "swelling and degradation" issues found in generic rubber:
Silicone: The gold standard for high-clarity aesthetics and superior heat resistance.
TPE (Thermoplastic Elastomer): A sustainable, eco-friendly alternative known for its excellent fatigue resistance and soft-touch feel.
NBR & Butyl Rubber: Specifically formulated for "aggressive" ingredients. These materials resist oil-based serums and volatile essential oils that typically cause standard rubbers to leach or lose their shape.
Utilizing high-precision injection molding, we maintain strict control over wall-thickness uniformity. This technical precision ensures every bulb provides a consistent $0.5\text{ml}$ to $1.0\text{ml}$ draw, guaranteeing dosage accuracy for your end-consumers and maintaining your brand’s reputation for quality.
Pantone Color Matching: Move beyond basic black and white. We provide custom color-matching (solid or translucent) using UV-stable pigments that won't bleed into your product.
Universal Calibration: Available in sizes from 13mm to 28mm, our bulbs are perfectly calibrated to fit standard GL18, DIN18, and other glass or plastic pipettes with a guaranteed leak-proof seal.
Material Compatibility Consulting: Not sure if NBR or TPE is right for your serum? Our technical team offers free material-compatibility consulting to ensure your formula remains stable from shelf to skin.
Medical-Grade Assurance: All bulbs are manufactured in a controlled, dust-free environment. They are BPA-free, Phthalate-free, and fully compliant with REACH, FDA, and RoHS standards.
Source Factory Lead Times: As a direct Source Factory from China, we maintain safety stock for standard sizes, cutting your global lead times from months to weeks.
Scalable Customization: We support growing boutique brands with flexible color customization and competitive MOQs, while maintaining the capacity for massive bulk orders.
| Feature | Detailed Specifications |
| Available Materials | Silicone, TPE, Butyl Rubber, NBR (Nitrile) |
| Neck Sizes | 13mm, 15mm, 18mm, 20mm, 22mm, 24mm, 28mm |
| Draw Capacity | $0.5\text{ml}$ to $2.0\text{ml}$ (Model dependent) |
| Color Options | Transparent, Solid, Neon, or Custom Pantone Matching |
| Chemical Resistance | Specialized options for Acid, Alkali, Oil, and Alcohol |
| Certification | FDA, REACH, RoHS Compliant |
| Quality Control | 100% Visual Inspection + Suction Testing |
| Sample Policy | Free Samples Available for lab testing and fitment check |
