PTFE Joint Sealant FAQs

• Does Phelps have materials and gaskets that meet USDA requirements?
  Related: Food Grade Nitrile

  Yes, Phelps carries many materials with that are Food Grade and meet the FDA and USDA requirements Phelps Food Grade Nitrile Phelps Food Grade Pac Read more...

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• Which gaskets can I use for FDA applications?

  There are quite a few classes of materials that are safe for use in Food applications, and thereby FDA compliance. Phelps Style 7205 is F Read more...

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• What problems can be caused by Pressure Spikes?
  Related: Gaskets

  Very high pressure spikes can occur in any line pumping a liquid if a valve is closed rapidly, leaving the fluid flow nowhere to go. The inertia of th Read more...

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• Does the use of (Heat) Traced Lines affect the gasket joint?

  Heat traced lines pumping materials can present a number of problems for gaskets: The bolts are usually hotter than the flanges since the heat is a Read more...

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• How do I fill a large gap in flanges? Can I stack gaskets? (Spacers in Flanges)

  We understand that some installations require a very thick gasket to fill a large gap between flanges. In such scenarios, we do not recommend stacking Read more...

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• What do I need to be concerned with when Gaskets are installed in Grooves or recesses?

  Gaskets installed in grooves or tongue and groove flanges require one extra consideration: the compressed height of the gasket must be considered. Thi Read more...

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• What are Gasket Constants?

  The ASME and ASTM committees are working on a new system and new set of numbers to be used in the ASME code calculations for flange design. These new Read more...

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• What is a Full Face Gasket?
  Related: Standard Flange Gaskets

  A full face gasket covers the entire flange face and includes bolt holes, typically used in flat faced flanges. A gasket for a raised face flange is t Read more...

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