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  2. Ozone cracking - Wikipedia

    en.wikipedia.org/wiki/Ozone_cracking

    Such seals are often critical for the operation of pneumatic controls, and if a crack penetrates the seal, all functions of the system can be lost. Nitrile rubber seals are commonly used in pneumatic systems because of its oil resistance. However, if ozone gas is present, cracking will occur in the seals unless preventative measures are taken.

  3. Earthen plaster - Wikipedia

    en.wikipedia.org/wiki/Earthen_plaster

    There are different ways to applicate the earthen plaster. The plaster can be applied in three coats, this is the Spanish process known as 'alisando'. The first layer is the scratch coat which provides adherence for the second layer the brown coat or levelling coat. The final layer is the color coat or finishing coat.

  4. Dry lubricant - Wikipedia

    en.wikipedia.org/wiki/Dry_lubricant

    Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium. [1] The two main dry lubricants are graphite and molybdenum disulfide. They offer lubrication at temperatures higher than liquid and oil ...

  5. Stress corrosion cracking - Wikipedia

    en.wikipedia.org/wiki/Stress_corrosion_cracking

    mild steel cracks in the presence of alkali (e.g. boiler cracking and caustic stress corrosion cracking) and nitrates; copper alloys crack in ammoniacal solutions ( season cracking ); high-tensile steels have been known to crack in an unexpectedly brittle manner in a whole variety of aqueous environments, especially when chlorides are present.

  6. Environmental stress cracking - Wikipedia

    en.wikipedia.org/wiki/Environmental_stress_cracking

    Environmental Stress Cracking (ESC) is one of the most common causes of unexpected brittle failure of thermoplastic (especially amorphous) polymers known at present. According to ASTM D883, stress cracking is defined as "an external or internal crack in a plastic caused by tensile stresses less than its short-term mechanical strength".

  7. Volkswagen to recall over 114,000 US vehicles over airbag ...

    www.aol.com/news/volkswagen-recall-over-114-000...

    The recall consists of some Beetle and Passat vehicles from model years 2006-2019. "The driver's side frontal airbag inflator may explode due to propellant degradation occurring after long-term ...

  8. Your car’s safety tech could lower the risk of accidents but ...

    www.aol.com/finance/car-safety-tech-could-lower...

    Your car’s ADAS safety tech lowers the risk of ... approximately 9 in 10 drivers with lane departure warning and prevention systems now keep them on — up from just 51 percent eight years ago ...

  9. Dry gas seal - Wikipedia

    en.wikipedia.org/wiki/Dry_gas_seal

    The first dry gas seal for a compressor was patented by Kaydon Ring & Seal in 1951 when it was known as Koppers Corporation. Field applications of dry gas seal designs were completed in 1952. The original patent was for Kaydon's "Tapered Ramp" lift geometry, a constant diameter / variable depth dynamic lift design. From that first dry gas seal ...

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