Products Description
Solenoid valve precision O-ring is used to ensure reliable sealing of valve bodies under harsh conditions such as high pressure, extreme temperature, or corrosive media. Its core function is to fill the gap between components through a precisely manufactured annular structure to prevent fluid leakage or external contaminants from invading.

Definition and Function
- Sealing component: Precision O-ring is used as a sealing component in solenoid valves. It is usually made of elastic materials such as rubber, which has excellent flexibility and sealing performance.
- Prevent leakage: O-rings are designed to fit into grooves or countersunk holes in valve components, forming a tight seal when the valve is in the closed position.
- Precision machining: The term "precision" in "precision O-ring" refers to the high accuracy in the manufacturing process. These O-rings are machined to strict tolerances to ensure a perfect fit and optimal performance of the valve assembly.
Material Diversity
Depending on the sealing medium and application scenario, the solenoid valve Precision O-Ring can be made of a variety of high-performance materials:
NBR (nitrile rubber): suitable for conventional media such as mineral oil, with oil resistance and wear resistance.
FKM (fluoro rubber, such as Viton): resistant to high temperature and chemical corrosion, suitable for special fluid environments.
EPDM (ethylene propylene diene monomer rubber): excellent anti-aging performance, suitable for water or steam media.
PTFE (polytetrafluoroethylene): as a hard seal seat, providing zero leakage performance.
| FKM 75 | Property | Unit | Test Method | Test Parameter | Value |
| Hardness | Shore A | ASTM D 2240 | 77 +3/-2 | ||
| Tensile Strength | MPa | ASTM D 412 | 14.8 | ||
| Ultimate Elongation | % | ASTM D 412 | 188 | ||
| Modulus at 100% | MPa | ASTM D 412 | 6.5 | ||
| Specific Gravity | g/cm3 | ASTM D 297 | 1.83 | ||
| Compression Set | % | ASTM D 395 B | 22h / 200°C | 23 | |
| Low temp. resistance | °C | ASTM D 1329 | TR10 | -16 |
Advantages of Linde Polymer

Selected raw materials, safe and environmentally friendly
1. The rubber materials are all from internationally renowned brands such as DuPont, Dow Corning, and JSR.
2. All products are produced by national standards, AS568, JIS, and other standards, and the materials have passed third-party professional certifications such as ROHS, REACH, and FDA.
3. The products are fine, the molds are high-precision, and there are no burrs or bumps.
Advanced equipment and mature technology
1. Adopt a precise production vulcanizing unit and a high-precision CNC machining center.
2. The company has a complete set of production processes to ensure the sealing and stable quality of the products.


Precision testing, quality control
1. Precision testing instruments ensure the qualified rate of products and check every level to prevent defective products from being delivered to customers.
2. Strict control of the production process to achieve pre-prevention, process control, and traceability afterward.
Value-added services, worry-free after-sales
1. Have a complete supply chain management, implement an effective cargo delivery plan, and ensure on-time delivery.
2. Provide value-added services such as early product participation, product design, material development, and secondary processing, such as grinding or spraying, special packaging, and assembly.
3. Provide customers with rapid rubber parts prototype trial production (rapid test).

about Us
Linde Polymer Tec Co., Ltd. mainly produces a variety of rubber compounds and rubber seals and currently has more than 3,000 material formulas and more than 2,000 product specifications. Products are suitable for automotive, aviation, machinery, petrochemical, medical, food, electronics, military, industrial, and other fields. Since the establishment of the factory, the company has completed the process consistency operation, and the product yield rate has reached 97.1%.

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R&D Advantages
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Manufacturing Advantages
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Product Advantages
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