• Out of Stock
    3/8" Cylinder Breather - Approved Hydraulics Limited
    Regular price £12.59
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    • Delivery to UK & Ireland

    3/8" Cylinder Breather

    Key Features

    • Thread: 3/8" BSP
    • Function: vents cylinder to atmosphere while filtering intake air
    • Element: integrated filter to reduce contamination ingress
    • Use: maintains pressure balance; prevents vacuum build-up
    • Application: hydraulic cylinders; gearboxes; reservoirs
    Regular price £12.59
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £25.10
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    • Delivery to UK & Ireland

    Cylinder Seal kit 30-60/70 series 203/303/403/503

    Key Features

    • Compatibility: Hydra Part cylinder series 203 ; 303 ; 403 ; 503
    • Bore sizes: 30 ; 40 ; 50 ; 60/70 mm range options
    • Intended use: complete reseal kit for the listed cylinder families
    • Typical kit contents: seals for piston ; rod ; and wiper plus static rings as used in cylinder rebuild
    • Applications: compact loaders ; attachments ; light industrial rams within these series
    • Selection note: confirm series and bore from cylinder ID to match the correct kit option
    Regular price £25.10
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £24.04
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    Cylinder seals kit 30-50/60 series 202/302/402/502/591/610/640

    Key Features

    • Scope: seal kit for hydraulic cylinders
    • Sizes: 30-50/60
    • Series: 202/302/402/502/591/610/640
    • Use: renew piston ; rod ; wiper seals
    • Application: hydraulic component
    Regular price £24.04
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    • Order by 3pm for Next Day Delivery
  • 1/2" Cylinder Breather
    Regular price £17.82
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    • Delivery to UK & Ireland

    1/2" Cylinder Breather

    Key Features

    • Thread: 1/2" NPT
    • Function: vents cylinder while filtering intake air
    • Benefit: balances pressure; reduces moisture and dust ingress
    • Element: integrated breather element (high-flow)
    • Use: hydraulic cylinders; small reservoirs
    Regular price £17.82
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Adam Hindle

    Sales Director

    I began my engineering career at Stockport College in around 2005, first completing a National Diploma in Electrical Engineering, followed by a Higher National Diploma in Mechanical Engineering. I then progressed to the University of Salford, where I earned a BEng (Hons) degree in Mechanical Engineering.

    After graduating, I started my professional career with Approved Hydraulics. I initially gained a combination of hands-on workshop experience and telephone-based sales experience. In later years, I moved into a full-time sales role and led the new crane and excavator attachments department that the company had recently established.

  • 1/4" Cylinder Breather
    Regular price £9.08
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    • Delivery to UK & Ireland

    1/4" Cylinder Breather

    Key Features

    • Thread: 1/4" BSP
    • Function: vents cylinder/actuator to atmosphere
    • Element: porous filter to block dust ingress
    • Benefit: prevents vacuum build-up and moisture accumulation
    • Use: protects seals and internal surfaces during stroke
    Regular price £9.08
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £173.06
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    • Delivery to UK & Ireland

    Cylinder Seal kit TG42S,, SR4, SR5, T-Cut18

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £173.06
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £172.86
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    • Delivery to UK & Ireland

    Cylinder Seal Kit For Intermercato Tigercut 210E/ T-Cut25 / TG 55 S/80 S/TC 210

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £172.86
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £151.20
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    • Delivery to UK & Ireland

    Cylinder Seal Kit For Intermercato GX 28-50

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £151.20
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £196.07
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    • Delivery to UK & Ireland

    Cylinder Seal Kit for Intermercato TC250, T-Cut30

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £196.07
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £101.36
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    • Delivery to UK & Ireland

    Cylinder Seal Kit For Intermercato TGO, TCB, 28 EG, 35, 35 S/SR, 18 DG, 20 DG

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £101.36
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Out of Stock
    Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £74.87
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £74.87
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £126.06
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    • Delivery to UK & Ireland

    Cylinders Seal Kits For Intermercato TG 22, 23, 25, 28, 25 PRO, 28 S, 22 EG, 15 DG

    Key Features

    • Type: OEM cylinder seal kit
    • Compatibility: model stated in title
    • Contents: rod seal ; piston seal ; gland wiper ; O rings
    • Benefit: improved holding and reduced external leakage
    • Use: maintenance overhaul of cylinders
    Regular price £126.06
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £18.73
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    • Delivery to UK & Ireland

    Cylinder Seal kit 25-40/50 series 201/301/401/501

    Key Features

    • Compatibility: Hydra Part cylinder series 201 ; 301 ; 401 ; 501
    • Bore sizes: 25 ; 30 ; 35 ; 40/50 mm options in one kit family
    • Intended use: reseal of small bore cylinders within listed series to restore function
    • Typical kit contents: piston ; rod ; wiper seals with static o rings used in cylinder rebuilds
    • Applications: compact hydraulic rams on implements ; compact plant ; attachments
    • Selection note: match cylinder series and bore at time of order to ensure fit
    Regular price £18.73
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £22.81
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    • Delivery to UK & Ireland

    Cylinder Seal kit 20-32/40 series 200/300/400/500

    Key Features

    • Compatibility: Hydra Part cylinder series 200 ; 300 ; 400 ; 500
    • Bore sizes: 20 ; 25 ; 30/32 ; 40 mm
    • Intended use: reseal kit for small bore standard cylinders used on compact equipment
    • Typical kit contents: piston ; rod ; wiper seals and static rings typically supplied for rebuild
    • Applications: small actuators on trailers ; clamps ; light duty machinery
    • Selection note: use bore size and series number to choose correct kit option
    Regular price £22.81
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £34.38
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 40-70/80 series 204/304/404/504/592

    Key Features

    • Compatibility: Hydra Part cylinder series 204 ; 304 ; 404 ; 504 ; 592
    • Bore sizes: 40 ; 50 ; 63 ; 70/80 mm
    • Intended use: reseal kit for mid size cylinders across the listed series
    • Typical kit contents: piston ; rod ; wiper seals with associated o rings typical to service kits
    • Applications: ag implements ; compact construction machines ; materials handling rams
    • Fitment check: match series code on cylinder plate to ensure correct family selection
    Regular price £34.38
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £25.91
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 35-60/70 standard

    Key Features

    • Compatibility: Hydra Part standard cylinders ; bores 35 ; 40 ; 50 ; 60/70 mm
    • Intended use: reseal kit to address external leaks ; internal bypass and poor cylinder holding
    • Typical kit contents: piston seal ; rod seal ; wiper ; static seals as typically included in kits
    • Applications: light plant ; agricultural implements ; compact handling equipment
    • Sizing note: measure bore and rod to ensure correct option under the 35 ; 60/70 set
    • Install tip: use appropriate assembly sleeves to avoid cutting PTFE or elastomer lips
    Regular price £25.91
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    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £36.47
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 30-70/80 standard

    Key Features

    • Compatibility: Hydra Part standard double acting cylinders ; bores 30 ; 40 ; 50 ; 60/70 ; 80 mm
    • Intended use: routine reseal kit for compact and mid size standard cylinders
    • Typical kit contents: dynamic piston and rod seals ; wiper and static sealing elements typical for rebuild
    • Applications: compact machinery ; auxiliary rams ; attachments
    • Fitment check: verify bore and rod combo to select the correct sub option within the range
    • Service note: install with clean fluid and avoid sharp edges to protect sealing lips
    Regular price £36.47
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £37.19
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 40-80/90 series 205/305/405/505/593/612/632/642/651

    Key Features

    • Compatibility: Hydra Part cylinder series 205 ; 305 ; 405 ; 505 ; 593 ; 612 ; 632 ; 642 ; 651
    • Bore sizes: 40 ; 50 ; 63 ; 70 ; 80/90 mm
    • Intended use: service kit for resealing listed series cylinders to prevent leakage and drift
    • Typical kit contents: rod seal ; piston seal ; wiper ; backup rings and o rings as required
    • Applications: mobile hydraulic cylinders across ag ; municipal and light construction machinery
    • Selection note: match series and bore markings to ensure compatibility across the variant list
    Regular price £37.19
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £46.04
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 50-90/100 series 206/306/406/506

    Key Features

    • Compatibility: Hydra Part cylinder series 206 ; 306 ; 406 ; 506
    • Bore sizes: 50 ; 63 ; 70 ; 80/90 ; 100 mm range
    • Intended use: resealing of medium bore cylinders in the specified series to recover performance
    • Typical kit contents: piston ; rod ; wiper and related static seals typical to cylinder service kits
    • Applications: suitable for rams on trailers ; loaders ; compact equipment within these series
    • Fitment check: use the series code stamped on the cylinder to select the correct kit
    Regular price £46.04
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £74.44
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    • Delivery to UK & Ireland

    Cylinder Seal kit 70-130/150 standard

    Key Features

    • Compatibility: Hydra Part standard double acting cylinders ; larger bores 70 ; 80 ; 90 ; 100 ; 110 ; 125 ; 130/150 mm
    • Intended use: service kit for major reseal of large bore standard cylinders
    • Typical kit contents: dynamic seals for piston and rod ; wiper ; and static seals typical for rebuild
    • Application range: heavy mobile plant ; materials handling ; forestry and similar equipment
    • Sizing note: check both bore and rod dimensions to match the correct sub option within the range
    • Service guidance: clean grooves and lightly lubricate seals during assembly to avoid damage
    Regular price £74.44
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £49.32
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 50-100/115 series 207/307/407/507

    Key Features

    • Compatibility: Hydra Part cylinder series 207 ; 307 ; 407 ; 507
    • Bore sizes: 50 ; 63 ; 70 ; 80 ; 90 ; 100/115 mm options combined in range
    • Intended use: complete reseal of specified series cylinders during overhaul or preventive maintenance
    • Typical kit contents: piston seal ; rod seal ; wiper ; static o rings as used in cylinder rebuilds
    • Use case: suited to construction ; agricultural and industrial rams within the listed series
    • Fitment check: confirm cylinder plate or purchase record for exact series before fitment
    Regular price £49.32
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery
  • Cylinder Seal Kit for Intermercato TG 12, 16, 19, 16 PRO, 16 EG - Approved Hydraulics Limited
    Regular price £43.24
    • All Items Guaranteed
    • Delivery to UK & Ireland

    Cylinder Seal kit 45-80/90 standard

    Key Features

    • Compatibility: Hydra Part standard double acting cylinders ; bores 45 ; 80/90 mm
    • Intended use: rebuild and reseal standard cylinders to restore pressure integrity and stop external leakage
    • Typical kit contents: piston ; rod ; buffer and wiper seals plus associated o rings for cylinder service
    • Applications: general mobile hydraulics ; loaders ; attachments ; ag and industrial equipment
    • Maintenance note: verify bore ; rod ; and series before ordering to match correct seal sizes
    • Fluid compatibility: formulated for use with mineral hydraulic oils common to mobile machinery
    Regular price £43.24
    • All Items Guaranteed
    • Delivery to UK & Ireland
    • Order by 3pm for Next Day Delivery

Hydraulic Cylinder Spares

Common Calculations FAQs

Calculating force, speed, pressure, power, and efficiency in hydraulic applications.

How do you calculate actuator speed?

Actuator speed is determined by flow rate and cross-sectional area:

Speed = Flow rate ÷ Area

Flow rate is the volume of fluid delivered (in L/min or GPM).

Area is the cross-sectional area of the actuator piston: π × (diameter ÷ 2)².

How do you calculate cylinder force?

Cylinder force can be calculated using:

Force = Pressure × Area

Pressure is the system pressure (in psi or bar).

Area is the cross-sectional area of the cylinder bore (in square inches or square centimeters).

Area = π × (bore diameter ÷ 2)².

How do you calculate pressure drop across a valve?

Pressure drop can be calculated using the valve flow coefficient (Cv):

Pressure Drop (ΔP) = (Flow Rate)² ÷ (Cv² × Fluid Density)

Flow Rate is the fluid flow (in GPM or L/min).

Cv is the valve flow coefficient.

Fluid Density is the density of the hydraulic fluid.

How do you size an accumulator?

Accumulator sizing considers required flow, pressure, and pre-charge:

Accumulator Volume = Flow Rate × Time ÷ Pressure

This determines how much fluid must be stored to maintain system pressure.

How to convert psi to bar?

Use the conversion factor: 1 bar = 14.5 psi.

To convert psi to bar, divide psi by 14.5.

Example: 200 psi ÷ 14.5 = 13.79 bar.

What is pre-charge pressure in an accumulator?

Pre-charge pressure is the initial gas pressure in the accumulator before fluid enters.

It helps maintain system pressure as the accumulator discharges.

Typically set to 70–80% of system operating pressure.

What is specific gravity of hydraulic fluid?

Specific gravity is the ratio of hydraulic fluid density to water.

A value of 1 means equal density.

Less than 1 means the fluid floats; greater than 1 means it sinks.

What is torque in a hydraulic motor?

Torque is the rotational force produced based on system pressure and motor displacement:

Torque = Pressure × Displacement ÷ 2π

Pressure is the operating system pressure.

Displacement is the volume displaced per revolution (in cubic inches or cubic centimeters).

What unit is hydraulic power measured in?

Hydraulic power is measured in horsepower (HP) or kilowatts (kW).

Hydraulic horsepower can be calculated using:

HP = (Pressure (psi) × Flow rate (GPM)) ÷ 1714.

What’s the relationship between pump speed and flow?

Flow rate is directly proportional to pump speed.

If pump speed doubles, flow rate doubles (assuming constant displacement).

This is important when adjusting flow or selecting a pump for varying speeds.