Photo 1

Wiper K06 70x78x5/7

CodeK06-070/1 PU
In stock12pcs
Priceexcl. VATFrom PLN 10.51/pcs
Wiper K06 70x78x5/7—
PLN 10.51excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeK06
Material typePU
Material codePU9201
BrandKastas
Weight11g
Wipers dimension
Inside diameter d70mm
Outside diameter D78mm
Width h5mm
Width H7mm

Documents

Description

The K06 wiper ring, size 70×78×5/7 mm, is used in hydraulic cylinders. Its function is to remove dirt, moisture and solid particles from the piston rod, protecting the hydraulic system from the ingress of contamination. Made of polyurethane PU9201, the ring operates at a maximum linear speed of 1,0 m/s. Technical parameters: Inner diameter (d): 70 mm ≈ 2.76'' Outer diameter (D): 78 mm ≈ 3.07'' Height (H): 5/7 mm ≈ 0.20/0.28'' Material: PU (PU9201) Max. linear speed: 1,0 m/s

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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