Photo 1

Rod seal K33 170x190x14

CodeK33-170/1 PU
In stock1pcs
Priceexcl. VATFrom €8.57/pcs
Rod seal K33 170x190x14—
€8.57excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeK33
Material typePU
Material codePU9401
BrandKastas
Weight124g
Hydraulic seals dimension
Rod diameter d170mm
Groove Diameter D190mm
Seal width h14mm

Documents

Description

The K33 170×190×14 PU gland ring from Kastas is designed for use in hydraulic cylinders. It is a U-ring used in the gland chamber (also commonly called the cylinder gland, cylinder nut or cylinder cover). It dynamically seals the movement of the piston rod, limiting oil leakage and protecting the system against pressure loss. Made of blue polyurethane (PU), it provides resistance to the demanding operating conditions of heavy-duty hydraulics. Technical parameters: Inner diameter: 170 mm (6.69 in) Outer diameter: 190 mm (7.48 in) Height: 14 mm (0.55 in) Material: PU (polyurethane) Colour: blue Kastas code: K33

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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