Plunger ring / spring bush

We supply two types of rings, the frontal rings and spring bushes.

HTS rings and spring bushes are made of tool steel or copper, depending on the application.

There are different plunger ring and spring bushing models made to fit different iTherm®, ABS, ATS and ARP plungers.

HTS DIFFERENCE

INNOVATIVE TECHNOLOGY

Based on MFT™ and DED technologies we produce components with conformal cooling / flow design and mechanical properties of a forged tool steel block.

SUPERIOR PERFORMANCE

iTherm® components have a big impact on cooling and material flow, resulting in shorter cycle times, higher cast/moulded part quality and subsequentially also productivity.

SOLUTION ORIENTED

Years of experience and R&D of HTS Group companies, combined with leading OEM customer partnerships gives us knowledge and capacity to help you improve your productivity.

OPTIMAL SOLUTION FOR VACUUM APPLICATIONS

PLUNGER RING

Made of hot work tool steel or copper, the plunger ring is softer than the inner side of the sleeve and has been specially developed to enhance contact and sealing.
During injection, the ring opens due to the penetration of aluminium between the plunger body and ring and its own elasticity

SPRING BUSH

Made with soft steel which is softer than the inner wall of the sleeve, the spring bush (also referred to as the back ring), has been specially designed for vacuum applications.
Due to its own elasticity during injection, the spring bush opens and ensures a vacuum.

Advantages over other Plunger rings

Extended plunger and sleeve lifetime

Plunger rings have a lower hardness than tips or sleeves.

Compared to harder “scraper” rings produced by our competitors, HTS Plunger rings extend the lifetime of both, pistons and sleeves.

PARAMETERS

Dimensional range

Diameter 40 - 230 mm

Material

Plunger rings are made using tool steel produced in EU, or cooper.

Delivery condition

heat treated

nitrided

Configure your Plunger ring online

We have developed an online configurator that helps you configure the parameters of Plunger ring according to your specific requirements.

We have a patented solution to prolong sleeve lifetime by up to 55%, at a lower cost than the conventional sleeve.

LOOKING TO EXTEND SHOT SLEEVE LIFETIME?

Our innovative rod spray lubrication system which lubricates the sleeve across the whole length will prolong the sleeve and plunger lifetime.

DON'T FORGET ABOUT LUBRICATION

Downloads

Product Data Sheet

You can find more detailed information in the downloadable datasheets.

CONTACT US

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