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Wiper 40x48x5/7 A202 PU

CodeA202-040/6 PU
In stock1184pcs
Priceexcl. VATFrom €1.69/pcs
Wiper 40x48x5/7 A202 PU—
€1.69excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeA202
Material typePU
BrandALP
Weight7g
Wipers dimension
Inside diameter d40mm
Outside diameter D48mm
Width h5mm
Width H7mm

Documents

Description

The wiper ring 40x48x5/7 A202 PU is a sealing element fitted in the gland of hydraulic and pneumatic cylinders. It effectively removes contaminants such as dust, mud or moisture, preventing them from getting inside the system. Made of polyurethane (PU), it is used in a variety of hydraulic systems, protecting working components against dirt. Technical parameters: Inner diameter (d): 40 mm Outer diameter (D): 48 mm Height (H): 5/7 mm Size in inches: 1.57x1.89x0.20/0.28" Material: PU (polyurethane) Catalogue code: A202-040/6 PU

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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