O-ring 72,39x6,99 NBR70
| Code | 48004839 | |
|---|---|---|
| In stock | 100 | pcs |
| Priceexcl. VAT | From €2.95 | /pcs |
Price by quantityexcl. VAT
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StockCode
Technical data
| Seal type | O-ring | |
|---|---|---|
| Material type | NBR | |
| Hardness Shore-A | 70 | |
| Norm design | DIN3771 | |
| Brand | OEM | |
| Weight | 12 | g |
| Inside diameter | 72,39 | mm |
|---|---|---|
| Cross section | 6,99 | mm |
Description
O-ring 72,39x6,99 NBR70 is an O-ring: a sealing ring with a circular cross-section. Inner diameter: 72,39 mm, cross-section: 6,99 mm, outer diameter: 86,37 mm. Material: NBR 70 Shore A. Dimensions according to DIN 3771. 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.
| Can be used | Do 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, kerosene | Sunlight and open air (ozone): the rubber cracks |
| Petrol (gasoline), propane, butane | Acetone, MEK, ethyl acetate and similar solvents |
| Water and water-based liquids, up to +80 °C | Benzene, toluene, trichloroethylene (aromatic and chlorinated solvents) |
| Compressed air, also with oil mist | Synthetic 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 emulsions | Steam 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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