Ciso Tool
Ciso Tool
Engineered to meet Swiss horological tolerances and extreme environmental pressure ratings (up to 20 ATM+).
Established Year
Production Facility
Skilled Technicians
R&D Engineers
Understanding the physics of hermeticity, compression set, and fluid dynamics in luxury watches and micro-electronics.
Modern luxury horology demands strict conformance to ISO 22810 and ISO 6425. Gaskets must form a physical barrier against gas molecules, moisture, skin acids, and cosmetics while maintaining elasticity over long operational cycles.
With watch tolerances narrowing to microns, our crystal and case back gaskets are processed with cryogenic de-flashing techniques to eliminate microscopic burrs. This ensures smooth seating and a perfect seal in metal grooves.
During watch winding or crown adjustment, gaskets undergo dynamic torque. We design crown gaskets with optimized Shore A hardness (typically 70-80 Durometer) to reduce wear while maximizing hermetic integrity.
The performance of a watch gasket is determined by its elastomer formulation. Different compounds offer specific resistances to environmental stressors. Under the expertise of our 60+ R&D team, we customize compounds to match your exact application requirements:
| Material Type | Hardness (Shore A) | Temp. Range | Key Feature |
|---|---|---|---|
| FKM (Viton) | 70 - 90 | -20°C to +200°C | Chemical & Acid Resistance |
| EPDM | 60 - 80 | -40°C to +130°C | Weathering & Ozone Resistance |
| Silicone (VMQ) | 40 - 70 | -55°C to +200°C | High Elasticity & Biocompatible |
| NBR (Nitrile) | 60 - 90 | -30°C to +120°C | Wear & Abrasion Resistance |
A professional manufacturer specializing in the research, development, and production of precision watch components and complete solutions.
Dongguan Ciso Tool Co., Ltd. was founded in 2006 and is a professional manufacturer specializing in the research, development, and production of mid-to-high-end precision watch components and complete watch solutions. Formerly operating under an earlier corporate structure, the company has grown into a modern manufacturing enterprise with strong integrated capabilities across design, engineering, and precision production.
The company operates an independent industrial facility covering over 20,000 square meters and employs more than 500 skilled staff members, including a dedicated R&D team of over 60 professionals. With advanced production equipment, strict quality control systems, and experienced technical personnel, Ciso is committed to delivering high-precision, high-consistency products for global watch brands.
Ciso focuses on the R&D and manufacturing of premium watch accessories, including watch dials, watch cases, watch straps, watch buckles, and precious metal components such as 18K gold watch parts and fine jewelry accessories. In addition, the company provides full ODM and OEM services, supporting complete watch customization from concept design and prototyping to mass production and assembly.
Guided by the principle of “Quality First, Integrity Supreme,” Ciso emphasizes excellence in every production process. The company implements rigorous quality assurance protocols, ensuring that each product meets international standards for durability, precision, and aesthetic refinement. Through consistent quality and reliable service, Dongguan Ciso Tool Co., Ltd. has established long-term partnerships with well-known domestic brands and continues to expand its presence in global markets. The company is committed to honest cooperation, mutual growth, and long-term value creation with international watch brands, striving to elevate the artistry and innovation of modern watchmaking.
Inside Ciso's ISO-compliant machining, assembly, and testing workshop environment.
Addressing high-mix, high-precision needs for volume distributors and international manufacturers.
Beyond traditional horology, our custom CNC resins and elastomer gaskets are engineered for heavy-duty applications. We supply insulation testing machines, robotic arm joints, and automotive manifolds with high-temperature, wear-resistant seals.
We solve common sourcing issues like aging, ozone cracking, and dimension drift. Our components undergo strict aging tests and vacuum packaging to guarantee a stable shelf life and immediate drop-in usability on your automated assembly lines.
For smart wearables incorporating optical heart-rate or biometric sensors, we provide custom over-molded and dual-durometer gaskets. These are engineered to pass rigorous biocompatibility tests and skin-sensitivity trials.
All materials comply with RoHS and REACH regulations. We provide complete certification documentation for international customs clearance, minimizing lead times for manufacturing facilities across North America, Europe, and Asia.
The future of micro-sealing: Next-generation polymers and nano-coatings.
By blending PTFE particles directly into the fluorocarbon or silicone matrix, we are developing gaskets that reduce friction against rotating crown stems. This minimizes wear on critical contact interfaces.
Applying ultra-thin, vapor-deposited barrier layers on standard rubber seals prevents the migration of plasticizers. This modification increases resistance to volatile solvent attacks and chemical cleanings.
Addressing the growing demand for green manufacturing, Ciso's R&D team is investigating bio-based monomers and halogen-free compounds. These alternatives maintain sealing integrity while reducing environmental impact.
Technical explanations regarding watch gasket selection, maintenance, and material characteristics.
High-durability sealing components for automotive, industrial machinery, and consumer applications.
