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Wiper K09 35x43x4/7

CodeK09-035 PU
In stock29pcs
Priceexcl. VATFrom €1.54/pcs
Wiper K09 35x43x4/7—
€1.54excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeK09
Material typePU
Material codePU9201
BrandKastas
Weight6g
Wipers dimension
Inside diameter d35mm
Outside diameter D43mm
Width h4mm
Width H7mm

Documents

Description

K09 wiper rings are installed in hydraulic cylinders to remove dirt, contaminant particles, moisture, etc. from the piston rod (tube), thereby protecting the hydraulic system against contamination. These wipers are selected by the following dimensions: inner diameter 35 mm, outer diameter 43 mm, seal height 4/7 mm. Made of PU PU9201

Material

PU / TPU / H-PU (polyurethane)

  • Standard PU / TPU-30 °C to +80 °C

Best for high pressure and abrasion, in mineral hydraulic oil. Standard PU must never meet hot water, steam or brake fluid, or run hotter than +90 °C.

Chemical resistance
Can be usedDo not use
Extreme pressure and pulsation (up to 40-50 MPa, very resistant to extrusion into the gap)Hot water and steam with standard PU: hydrolysis, it breaks down into powder
Abrasion, friction, cutting and tearing (4-5 times tougher than NBR)Glycol brake fluid (DOT 3, DOT 4, DOT 5.1): swells quickly
Mineral hydraulic oil (HL, HLP) and greaseHigh temperatures above +90 to +100 °C with standard TPU: it softens
Fuel oil, diesel and technical oils (aliphatic hydrocarbons)Strong (concentrated) acids and alkalis: sulfuric, nitric, caustic soda
Ozone, weather and sunlight (does not crack from weather)Acetone, MEK, toluene, benzene, dichloromethane (polar and aromatic solvents)
Water-based fire-resistant fluids HFA, HFB (only special H-PU)Synthetic ester oils and fire-resistant fluid HFD-R
Dry compressed air and technical gasesStrong alcohols (methanol, ethanol): swelling

Water and heat destroy standard PU: above +50 to +60 °C in water or damp oil it turns into a sticky paste or crumbles. If the system contains water or an emulsion, use only H-PU (hydrolysis-resistant).

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