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O-ring 145x2 NBR70

Code48012113
In stock300pcs
Priceexcl. VATFrom €1.72/pcs
O-ring 145x2 NBR70—
€1.72excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeOR
Material typeNBR
Hardness Shore-A70
Norm design3771
Weight10g
Country of originItaly
CN code40169093
O-ring dimension
Inside diameter145mm
Cross section2mm

Description

{title} is an: a sealing ring with a circular cross-section. Inner diameter: {d} mm, cross-section: {s} mm, outer diameter: {outer_diameter} mm.[[ Material: {material_full}.]][[ Dimensions according to {norm}.]] An O-ring is a single elastomer ring. It is compressed in the groove during assembly, and the pressure of the medium then deforms it further, increasing the contact force on the sealing surfaces, so no additional clamping parts are needed. It is used for static and dynamic joints in hydraulic and pneumatic systems.

Material

NBR (nitrile butadiene rubber)

  • Operating temperature-30 °C to +100 °C

Good with oils, fuels, water and compressed air. Not for brake fluid, solvents, strong acids or sunlight.

Chemical resistance
Can be usedDo not use
Mineral oil, grease and hydraulic oil (H, H-L, H-LP)Brake fluid (DOT 3, DOT 4, DOT 5.1): the ring swells quickly
Diesel, fuel oil, keroseneSunlight and open air (ozone): the rubber cracks
Petrol (gasoline), propane, butaneAcetone, MEK, ethyl acetate and similar solvents
Water and water-based liquids, up to +80 °CBenzene, toluene, trichloroethylene (aromatic and chlorinated solvents)
Compressed air, also with oil mistSynthetic ester oils and fire-resistant fluid HFD-R
Water-based fire-resistant hydraulic fluids (HFA, HFB, HFC)Strong (concentrated) acids, e.g. nitric and sulfuric, and strong oxidizers
Oil-and-water emulsionsSteam and hot water above +100 °C
Weak acids, alkalis and salt solutions, at room temperature
Use with cautionPetrol with a lot of bioethanol (E10, E85): better use FKM (Viton)

Shows low compression set within the recommended temperature range.

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