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Replacement of OEM hydraulic seals in large recycling press



A commonly used model of a recycling shear press at a West Australian recycler was experiencing leakage from the gland seals within only three months after resealing with OEM rag and rubber v-sets. This required regular gland to be tightening over the cylinder lifetime, causing more excessive wear to steel components and continuous monitor for leakage.


Provide a cylinder seal set that would allow zero leakage throughout the entire operating range with no need for attention in between scheduled maintenance, resulting in a bypass free cylinder with much longer lifetime and reduce maintenance costs.


Chesterton’s high-performance thermoset AWC860 urethane, Chesterton’s unique seal designs and precision manufacturing. Our team worked very closely with repairers throughout the stripping and rebuilding process to ensure we offered the best possible solution.


This high-performance polymer is capable of a high surface speed of 1.25m/s even with coupled high operating temperatures of 120 C. This coverage caters for all hard-working, heavy-duty equipment. Particularly in the Australian climate where OEM seals are commonly rated to no more than 100 C, this material has shown outstanding performance.

11K Stack Set 

The single-acting, two-piece, stacked rod seal set employs a negative rake design to optimise operating performance while easing installation into the stuffing box cavity. The bottom ring is the primary sealer while the top ring works as an anti-extrusion ring, provides secondary sealing, and gives added support to the sealer ring.

P22k Piston Seals

The optimum seal design enables controlled pressure distribution through the entire seal component while the proper expansion space provides free space for deformation under pressure, optimising seal contact area on the sliding surface.


Client Reported

It has been in operation for more than thirty-six months with no leakage identified, which has saved the client over $60,000 AUD in three years, considering all maintenance costs.

11K Stack Set

P22K Piston Seals






AW860 Chesterton materials


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