Photo 1

Pneumatic seal 10x18x5,5/4,7 A855 PU

CodeA855-010 PU
In stock2pcs
Priceexcl. VATFrom €1.69/pcs
Pneumatic seal 10x18x5,5/4,7 A855 PU—
€1.69excl. VAT

Price by quantityexcl. VAT

Available for registered usersSign in or create an account

Technical data

Properties
Seal typeA855
Material typePU
BrandALP
Weight1g
Pneumatic seals dimension
Rod diameter d10mm
Bore Diameter D18mm
Width 14,7mm
Width 25,5mm

Documents

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).

We recommend: Industrial chemicals

View all

We recommend: Tools

View all