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Product group: Piston seal
Design: TPU seal with a rectangular energising element
Profile no.: 84
Specification: Z suitable for two-sided pressure load
Seal material: TPU 95
O-Ring material: NBR 70 or 80

Operational application limits
Pressure (MPa): ≤40
Temperature (°C): -30 to +100
Running speed (m/s): ≤0,5

Hydraulic oils in accordance with DIN 51524 (Part 1 – 3), flame resistant hydraulic fluids (HFA, HFB, HFC), lubricating oils and greases based on petroleum oils

The double-acting K84 is composed of an highly extrusion-resistant TPU sealing element, which is prestressed by a rectangualr NBR ring. The K84 is distinguished by its extraordinary sealing funktion under both dynamic and static loads. If there is pressure on both sides, two sealing edges establish a secure media separation. Thanks to a standardized installation space the piston seals K70 or KPOR 30/130 can be used as an alternative, depending on the operating conditions. The K84 thus offers the user maximum flexibility during the design phase.

This two-piece seal is installed with an easy snap fitting in closed grooves. Control of accidental twisting by means of a built-in marking.

The K84 is specially designated for medium and heavy-duty mobile hydraulics. It's outstanding sealing function, small installation grooves and easy assembly permit its use in numerous applications like agricultural machinery, construction machinery, loading craned, injection moling machines, industrial vehicles, standard cylinders and much more.
Furthermore the rectangular ring provides an uniform pressure distribution and twist-protection during operation.

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