Hydraulic AQ piston seals
Model: DQF
Temperature: -45/+200℃
Speed: ≤3m/s
Pressure: ≤60MPa
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
Products Description
AQ piston seal is a double-acting that incorporates an elastomer quad-Ring/X-Ring and an elastomer or polyurethane Bean Seal in the dynamic sealing face. It is energized by two O‑Rings to improve sealing behaviour. PTFE seal ring and the x-ring together provides the dynamic sealing function, while the o-ring energizers provide the static sealing. It is a high-quality sealing solution designed specifically for hydraulic systems that require high strength and excellent sealing performance. These seals are used to prevent hydraulic oil leakage from the piston by forming a tight seal. They are very suitable for various applications, including industrial machinery, construction equipment, and agricultural machinery.
AQ piston seals are highly reliable and designed to provide superior performance in hydraulic and pneumatic systems. These seals provide excellent sealing performance to ensure that fluids and gases do not leak from the system. They are made of high quality materials that are resistant to wear, corrosion and extreme temperatures.
Advantages

One of the main advantages of AQ piston seals is their ability to withstand high levels of pressure and temperature. They are made of high-quality wear-resistant materials that can maintain their performance even under harsh operating conditions. These seals are also very durable, ensuring long-lasting and reliable performance.
Another advantage of AQ piston seals is their ability to reduce friction and wear. Because they form a tight seal, help reduce friction between the piston and cylinder wall. This helps to prevent piston and cylinder wear, thereby extending the service life of the hydraulic system.
In addition, the AQ piston seal is easy to install and maintain. They are designed to be tightly installed in the piston groove, which helps ensure correct installation and tight sealing. And because they are made of high-quality materials, they require almost no maintenance over time
Working principle of AQ piston seals
AQ piston seal consists of three main components; sealing lip, excitation element, and friction element. The sealing lip is made of high-quality elastomer, such as butyronitrile, fluorocarbon and silicone, to make it wear resistant. On the other hand, the excitation element provides the necessary force to allow the sealing lip to maintain an appropriate fit with the cylinder wall. Electric components are usually made of stainless steel or composite materials. Friction components help reduce the amount of friction between the seal and the cylinder surface.
When installing the AQ piston seal, the sealing lip is pressed against the cylinder wall, forming a tight seal. During operation, the excitation element provides the force required to maintain contact between the sealing lip and the cylinder wall. This ensures that no leakage occurs during the application of pressure. Installed on the dynamic sealing surface with limited contact point, to realize the separation and sealing between two medium. It combines the low friction performance of the sealing materials and good sealing performance of the rubber elastomer; such optimization design significantly reduces the friction and minimizes the leakage.
Overall, there are many benefits to using AQ piston seals in hydraulic systems. They offer high strength and excellent sealing performance, as well as the ability to withstand high levels of pressure and temperature. And because they are easy to install and maintain, they are a cost-effective solution for a wide range of applications.
Pressure | 160bar | 200bar | 300bar |
Max Gap E | E≤0.6mm | E≤0.4mm | E≤0.3mm |
Installation Dimension table based on Metric Size (mm)
D H9 | d h9 | L +0.2 | O Ring CS d1 | X Ring CS d2 | R1≤ | C≥ |
40~79 | D-10 | 6.3 | 2.62 | 1.78 | 0.6 | 4 |
80~133 | D-13 | 8.3 | 3.53 | 2.62 | 1.0 | 4 |
135~462 | D-18 | 12.3 | 5.33 | 3.53 | 1.3 | 6 |
465~700 | D-31 | 16.3 | 6.99 | 5.33 | 1.8 | 7.5 |
Our strength
Our strength
The company has 5,000 square meters of professional production plants, 2000 square meters of constant temperature and humidity production workshop, dozens (sets) of advanced production equipment.
Own a professional and technical production team and sales service team.
The selection of raw materials are international first-line brand suppliers, In order to ensure product quality, we promise that don't add waste (recycled materials) in the material.
The company has developed 235 sealing materials formulas, and 1725 sealing type models are selected for customers.
Imported raw materials to the finished product of one-stop, CNC turning customized products without mold cost.
In 2015, we have passed ISO9001-2015 international quality system certification, and in 2022, the IATF automotive product international quality system certification was obtained. Refer to the design of the international brand structure, deepen the design guarantee sealing effect!
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