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Rod seal RSD 20x25x4 PU

CodeRSD 0200 0250 040 C0
In stock137pcs
Priceexcl. VATFrom PLN 6.73/pcs
Rod seal RSD 20x25x4 PU—
PLN 6.73excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeRSD
Material typePU
Material codeC0
Foreign code2ERSD774
BrandArtic seals
Weight2g
Hydraulic seals dimension
Rod diameter d20mm
Groove Diameter D25mm
Seal width h4mm

Documents

Description

Rod seal RSD 20x25x4 PU [2ERSD774] is a double-lip sealing ring made of polyurethane C0 by the renowned Italian manufacturer Artic Seals. It is designed for use in hydraulic cylinders. Thanks to the elasticity of the material, both lips are pressed against the mating surface, which ensures effective sealing. The additional lip stabilises the seal and protects it against external contamination. The design of the ring prevents the stick-slip effect and supports sealing performance at low temperatures. The technical data of rod sealnia U RSD 20x25x4 PU [2ERSD774] are: Working pressure: up to 400 bar Linear speed: up to 0,5 m/s Hardness: 93 Shore A ±2 Material: polyurethane C0 with high abrasion resistance and low compression set Rod seal RSD 20x25x4 PU [2ERSD774] is a high-specification product that meets the requirements of even the most demanding customers.

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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