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MSO Seals and Gaskets can custom machine Oil seals as well as mold any oil seal you may require, Metric or Standard or special.
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SEALING LIP MATERIALS
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The sealing lips are made of a compound consisting of one or more basic elastomers and a series of ingredients such as reinforcing fillets, plasticisers, antioxidants, accelerators, etc. which provide the product with specific properties. |
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Compound formulations are aimed at providing the |
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material with the following properties: |
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Stability when in contact with the fluid the seal is designed |
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for stability at operating temperatures. |
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High elasticity modulus |
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Wear resistance |
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Low friction coefficient |
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Rubber grade used include: |
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Nitrile rubber |
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Silicone rubber |
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Fluorinated rubber |
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Nitrile Rubber |
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This is the most widely used elastomer in current applications. More specifically, it is suitable for ensuring |
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sealing in the presence of: |
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Petroleum derivatives ( petrol, diesel oil) |
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Petroleum oils and greases (oils for engines, gear boxes, |
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differential gears,etc.) |
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Fuel oils |
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Animal and vegetable oils and fats |
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Water and aqueous solutions (lyes) |
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The temperature can vary from -40 C to +120 C |
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Nitrile rubber is NOT RECOMMENDED for: |
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Oils and greases containing aggressive additives |
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Aromatic hydrocarbons (benzol) |
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Chlorinated solvents (Tri, Per, Tetra) |
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Ketones |
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Hydraulic phosphoric esters |
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SILICONE RUBBERS |
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It is particularly resistant to atmospheric agents, light and ozone. It has a good resistance to high-aniline content and petroleum oils; it can be also used with sulphur-containing oils. |
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Among currently used rubbers it features the lowest friction coefficient. |
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In spite of lower tear resistance and tensile strength, silicone rubber is often used due to the consistency of the characteristics at both low and high temperatures. |
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The temperature can vary from -50 C to +180 C |
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Silicone rubber is NOT RECOMMENDED for seals in the presence of acids, alkalis, high-pressure steam and boiling water (hydrolysis), petrols, aromatic hydrocarbons and chlorinated solvents |
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FLUORINATED RUBBER (Viton®) |
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This rubber is characterized by an excellent heat resistance. In fact its elastic properties remain unaltered permanently up to 200 C |
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for 3000 hours up to 230 C |
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for 1000 hours up to 260 C |
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for 240 hours up to 290 C |
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for 18 hours up to 316 C |
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Moreover, this rubber offers unequalled performances in contact with : |
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Aliphatic hydrocarbons |
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Aromatic hydrocarbons (toluol, benzol and xylol) |
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Vegetable oils and fats as well as petroleum oils and greases |
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even containing additives |
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Chlorinated solvents |
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Acids and chemical agents |
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Ozone |
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Light and atmospheric agents |
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The temperature can vary from -30 C to +200 C |
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It is NOT RECOMMENDED for use in the presence of : |
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Low molecular weight esters and ethers |
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Ketones |
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Some amines |
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Hot anhydrous hydrofluoric acid |
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Chlorosulphonic acids |
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Viton®) updated to read viton® is a registered trademark of DuPont Dow Elastomers.
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