Merkel Original/High Pressure PTFE Hydraulic Cylinder Rod Seal/T20-180-205-14.6-12.5

1. Product Advantages
Manufactured according to Merkel T20 standard dimensions, perfect interchangeability and easy installation.
Excellent static and dynamic sealing performance, low friction, stable operation without crawling.
Outstanding wear resistance and pressure resistance, long service life, reducing maintenance frequency.
Good oil return effect, effectively preventing external leakage and external contamination.
Wide adaptability to hydraulic media, suitable for medium and high pressure hydraulic systems.
Stable performance under harsh working conditions, reliable for long-term operation.
2. Working Principle
The T20-type rod seal adopts an asymmetric structural design with a precision sealing lip.
Under working pressure, the sealing lip fits closely with the piston rod surface to block hydraulic oil leakage.
During reciprocating movement, the optimized lip structure maintains stable contact force to ensure continuous sealing.
The unique oil return design brings residual oil back to the cylinder side, avoiding oil leakage and pollution.
Can be used as a primary seal or an auxiliary seal in a combined sealing system.
3. Product Details
Model: T20-180-205-14.6-12.5
Inner diameter: 180 mm
Outer diameter: 205 mm
Height: 14.6 mm
Groove width: 12.5 mm
Material: High-performance polyurethane
Hardness: 95 Shore A
Max sliding speed: ≤ 0.8 m/s
Standard: ISO 5597 & Merkel T20 standard
Application: Medium & high pressure hydraulic cylinders
4. Application Range
Construction machinery: excavators, loaders, bulldozers, cranes, road rollers
Industrial machinery: hydraulic presses, injection molding machines, machine tool hydraulic systems
Material handling: forklifts, aerial work platforms, lifting cylinders
Agricultural machinery: tractors, harvesters, various hydraulic working devices
Engineering cylinders: mining machinery, metallurgical equipment, hydraulic support systems
5. FAQ
Q1: Is this product compatible with Merkel T20 standard?
A1: Yes, our products are fully manufactured according to Merkel T20 standard dimensions and can be used as direct replacements.

Q2: Can it be used as primary seal or secondary seal?
A2: It can be used as both. It is suitable for primary sealing at low speed and auxiliary sealing at higher speed.

Q3: What hydraulic oils are applicable?
A3: Suitable for most mineral hydraulic oils. For special media, please contact us for confirmation.

Q4: What is the working pressure and temperature range?
A4: Suitable for medium and high pressure hydraulic systems with a wide working temperature range.
Q5: Do you provide other sizes of T20 series seals?
A5: Yes, we have a full range of T20 standard sizes in stock and can also support customized requirements.
6. Company Selling Points (Forever Seals)
Professional supplier of hydraulic seals with many years of industry experience.
Strict quality control system to ensure stable and reliable product performance.
Complete size inventory, fast delivery and short lead time.
Professional technical support for model selection, installation and application solutions.
Accept both small-batch trial orders and bulk orders with competitive prices.
Safe and standardized packaging, reliable global logistics and transportation.
Focus on customer needs, providing long-term stable supply and after-sales service.