• July 08. 2021

Hydraulic seals, also called hydraulic cylinder seals or shaft seals, are parts used to keep fluids from escaping from cylinders, at the same time preventing contaminants from entering into cylinders. They are critical parts in many types of machinery since they help create a method for fluid power to be converted into linear motion. These seals need to be designed and produced to withstand high p...

• July 29. 2021

Piston seals for hydraulic cylinders are quite similar to rod seals, but they are attached to a piston that seals a bore or cylinder housing. These seals are specifically designed to prevent pressurized fluid from leaking down in between the piston and the bore, while the piston itself is pushed down the cylinder bore. The high-quality hydraulic piston seals from JST will keep the pistons in your ...

• November 01. 2021

Rod seals are the most important seal within any hydraulic sealing system, which are used to prevent leakage of hydraulic fluid to the outside of the sealing system. Rod seals should be paired with an appropriate wiper and gland housing design to ensure correct operation. Rod seals are often the critical factor in ensuring that a hydraulic cylinder operates at peak performance. Leakage throug...

• December 01. 2021

We recently got a quality complaint from customer that the hydraulic rod was burn during working, see below photo. After analysis with our engineering team, we call this “Diesel Effect”. We’d like to discuss about this. What is the “diesel effect”? The diesel effect occurs in a hydraulic cylinder when air is drawn past the rod seals, mixes with the hydraulic fluid and explodes when pressurized. Ho...

• March 14. 2022

Valve seals precisely control the amount of oil entering the valve stem system, making them critical components in maintaining your engine’s compression levels. Having a valve stem seal that works correctly within any of your applications can save you time and money by eliminating the need for lengthy engine repairs and replacements. But how to install valve stem seals, please see below. Installat...

• April 19. 2023

Hydraulic seals are essential components in a hydraulic system as they help prevent leaks and ensure the smooth and efficient operation of the hydraulic system. What are the commonly used hydraulic seals? Hereby show you below: Hydraulic sealing systems include: O ring O-rings are the most commonly used hydraulic seals, and are suitable for a wide range of applications. Material typically made fro...