Claron Polyseal Single Acting Rod Seal HBI

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Claron style HBI is a single acting seal for gland applications using the same housing designs as Style CS6. The sealing element is manufactured in Polyurethane, with an Acetal anti-extrusion ring. Designed as a high pressure, low friction seal for use in second generation tandem sealing arrangements. The HBI seal is used on the pressure side, and a ‘low leak’ but higher friction seal on the non-pressure side to collect the oil film during the positive stroke. This type of arrangement is used where both low friction and low leakage are required. The seals high pressure resistance makes it suitable for use in heavy duty applications where shock loads and pressure spikes occur, as found in mobile plant equipment.

Maximum Pressure
Max Speed                      Temp. Range Temp. Range
m/s                           -40°C to 80°C -40°C to 110°C
0.50                               350 Bar

0.15                               500 Bar

300 Bar

450 Bar

AU Polyurethane
DIN Hydraulic Fluid Description °C
H Mineral oil without additives 100
H-L Mineral Fluid with anti corrosion and anti ageing additives 100
H-LP Mineral oil as HL plus additives reducing wear, raising load 100
H-LPD Mineral oil as H-LP but with detergents and dispersants 100
H-V Mineral oil as H-LP plus improved viscosity temp. 100
HFA E Emulsions of mineral oil in water. Water content 80-95% 40
HFA S Synthetic oil in water. Water content 80-95% 40
HFB Emulsions of water in mineral oil. Water content 40% 40
HFC Aqueous polymer solutions. Water content 35% ns
HFD R Phosphoric acid ester based ns
HFD S Chlorinated hydrocarbon based ns
HFD T Mixtures of HFD R and HFD S ns
HEPG Polyglycol based ns
HETG Vegetable Oil based 60
HEES Fully synthetic ester based 60

These range perameters are Maximum simultaneous conditions. Optimum service conditions are affected by temperature, speed, pressure, surface finish and extrusion gaps.

Refer to Appendix 1 for further information.

Note: Clearance gap F is the maximum permissable. i.e. gap completely on one side, in the temperature range of -30°C to 100°C The use of a suitably selected Claron bearing ring will effectively reduce the clearance gap F max. to a value closer to F/2 thus increasing the pressure capability of the seal.


For surface finish and recommended lead in chamfers refer to the illustration below. For housing dimensions and machining tolerances refer to the catalogue page of selected seal. Refer to Appendix 4 for value of tolerance symbols.


For the seal to function correctly, it is important that care be taken in fitting the seal within its housing. For a detailed checklist, refer to Appendix 3.


f8                                           H9                                         +0,20                                      Nominal

HBI 065 65 80.5 6.3 4
HBI 070 70 85.5 6.3 4
HBI 075 75 90.5 6.3 4
HBI 080 80 95.5 6.3 4
HBI 085 85 100.5 6.3 4
HBI 090 90 105.5 6.3 4
HBI 095 95 110.5 6.3 4
HBI 100 100 115.5 6.3 4
HBI 140 140 155.5 6.3 4

Items in BOLD are to suit ISO7425-2 housings.


Claron Polyseals


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