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2. Hydraulic fluid - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_fluid

   A hydraulic fluid or hydraulic liquid is the medium by which power is transferred in hydraulic machinery. Common hydraulic fluids are based on mineral oil or water. [ 1 ] Examples of equipment that might use hydraulic fluids are excavators and backhoes , hydraulic brakes , power steering systems, automatic transmissions , garbage trucks ...

3. Antiwear additive - Wikipedia

   en.wikipedia.org/wiki/Antiwear_additive

   Tricresyl phosphate (TCP), used for high-temperature operation, often used as an AW and EP additive in turbine engine lubricants, and also in some crankcase oils and hydraulic fluids; Halocarbons (chlorinated paraffins), for extreme pressure operations; Glycerol mono oleate

4. List of welding codes - Wikipedia

   en.wikipedia.org/wiki/List_of_welding_codes

   Specification for the Welding of Hydraulic Cylinders AWS D15.1: Railroad welding AWS D15.2: Railroad welding practice supplement AWS D16.1: Robotic arc welding safety AWS D16.2: Robotic arc welding system installation AWS D16.3: Robotic arc welding risk assessment AWS D16.4: Robotic arc welder operator qualification AWS D17.1: Aerospace fusion ...

5. List of additives used for fracking - Wikipedia

   en.wikipedia.org/wiki/List_of_additives_used_for...

   In the US, about 750 compounds have been listed as additives for hydraulic fracturing, also known as ingredients of pressurized fracking fluid, [9] in an industry report to the US Congress in 2011 [10] [11] The following is a partial list of the chemical constituents in additives that are used or may have been used in fracturing operations. [12]

6. Gear oil - Wikipedia

   en.wikipedia.org/wiki/Gear_oil

   MIL-PRF-2105E has been re-written as SAE Standard J2360. SAE J2360 standard is a new global quality standard that defines a level of performance equivalent to that defined by MIL-PRF-2105E, a U.S. military standard for approval that was not available to oil blenders in all parts of the world.

7. Orders of magnitude (pressure) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

   Pressure where water boils at normal human body temperature (37 °C), the pressure below which humans absolutely cannot survive (Armstrong limit) [46] +9.8 kPa +1.4 psi Lung pressure that a typical person can exert (74 mmHg) [47] 10 4 Pa