Transcription of SURFACE FINISH GUIDELINES
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SURFACE FINISH GUIDELINES
FINDING THE OPTIMUM SURFACE FINISHTo achieve the optimum seal performance it is critical for themating hardware SURFACE FINISH to have defined characteristicsthat address the roughness, directional orientation or lay andhardness for reliable seal efficiency and life. As the Aerospaceindustry transitions from the traditional hard chrome platingtoward the use of HVOF (High Velocity Oxygen Fuel) coatings, thedefinition of an optimum SURFACE FINISH has also recently hard chrome plating had been effectively utilizedfor dynamic surfaces as the traditional coating method. To thisend, Aerospace seal gland specifications have been publishedwhich include SURFACE FINISH requirements that are proven to becomplimentary to efficient seal performance, primarily when usedwith established elastomeric and PTFE contact is important to recognize the distinct differences between hardchrome plating and HVOF coating.
Reinforced PTFE Cap/Contact Seals Due to the fact that PTFE materials are inherently self-lubricating, the need for boundary layer lubrication between the seal and the
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