pipe gasket. rtj, sprial, metal jacketed

Download Pipe gasket. RTJ, Sprial, Metal Jacketed

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Training Presentation

GasketBy: Varun Patel, B.E- Mechanical, PMP

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GasketGasket is sealing material placed between connecting Flangescreate a static seal Maintain leakage proof sealing in all operating conditions

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Gasket Selection Criteria TemperaturePressureCorrosion resistanceTypes of fluidRobustnessAvailability Cost

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Gasket TypesNon-MetalRubber, Teflon, Compressed Non-asbestos Fiber (CNAF)Soft gasket can be full face or inside bolt circle Easily compressed with low tension boltingUsed in low pressure class flanged such as 150 or 300 ClassNormally used in low temperature servicesNot used in hydrocarbon servicesCheapest and easily available 4

Non-Metal Gasket

CNAFPTFE

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Gasket TypesMetalAlso known as ring gasket or RTJSoft iron, Low Carbon steel, Stainless Steel, Monel, inconelUsed in high pressure class flanges, normally above 900 ClassHigh tension bolting requiredVery robustMost costly6

Metallic Gasket R-Type (RTJ)

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Gasket TypesComposite Combination of metal and non-metalSpiral wound, Metal Jacketed, KamprofileGraphite or PTFE used as filler materialStainless steel or other exotic material can be used as winding materialUsed in wide range of pressure and temperatureCareful handling requiredCost effective

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Spiral wound GasketComposites of metal and non-metallic materialsGraphite or PTFE used as filler materialStainless steel or other exotic material can be used as winding materialMost widely use type gaskets. Suitable for wide range of pressure and temperature class. 9

Spiral Wound Gasket

Outer RingInner RingWinding Material10

Metal Jacketed Gasket

Composites of metal and non-metallic materialsSoft filler material are enclosed in outer metal sheet jacket11

Kamm/ Cam profile GasketMetal core with concentric groovesSealing layers of either graphite or PTFECostlier than Spiral wound but provide better blowout resistance easy to handle even in large diameters

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What we have learned?Types of GasketVarious Construction

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