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Wiper K103-28x36x4,5/6 PU

CodeK103-028 PU
In stock17pcs
Priceexcl. VATFrom PLN 8.89/pcs
Wiper K103-28x36x4,5/6 PU—
PLN 8.89excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeK103
Material typePU
BrandKastas
Weight4g
Wipers dimension
Inside diameter d28mm
Outside diameter D36mm
Width h4,5mm
Width H6mm

Documents

Description

The wiper ring K103 28x36x4,5/6 PU is a soft double-acting wiper, used in hydraulic cylinders to protect the system against contaminants and moisture. Made of flexible polyurethane PU9201, it effectively removes dust, mud and water from the piston rod surface while leaving a thin layer of oil that reduces friction and wear of the mating components. The K103 wiper is used in industrial and mobile hydraulics, and in construction, agricultural and transport machinery. Technical parameters: Inner diameter (d): 28 mm Outer diameter (D): 36 mm Height (H1/H2): 4,5 / 6 mm Size in inches: d x D x H = 28x36x4,5/6 mm ≈ 1.10”x1.42”x0.18/0.24” Material: Polyurethane (PU9201) Sliding speed: up to 1 m/s Type: soft double-acting wiper Application: hydraulic cylinders, construction machinery, presses, forklift trucks, agricultural machinery

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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