• 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 19. 2021

PTFE (Polytetrafluoroethylene) material is widely used in hydraulic and pneumatic seals. PTFE gets high melting point in excess of 300℃, has good resistance to ageing, as well as low coefficient of friction. PTFE seals are used to enhance friction capabilities, withstand high pressure applications, and extend seal life in applications outside the parameters of elastomeric seal use. We offer a rang...

• 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...

• March 25. 2022

A hydraulic seal is a relatively soft, non-metallic ring, captured in a groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion. They are widely used. Hydraulic seals material Generally Hydraul...

• June 01. 2022

Hydraulic cylinders are used to perform work in a variety of different situations and applications on a daily basis. In order to contain pressurized fluid and maintain its movement in the hydraulic cylinder system, two basic types of complex configurations of high-performance seals are required: static seals and dynamic seals (supported by guide rings). There are certain types of seals in each cat...