FAQ | Product & Materials

Most Viewed FAQ's

How high a temperature do Phelps Gasket Sheets support?
What is the difference between EP, EPR, and EPDM?
Why is my O-ring leaking?
How can I predict the compressive load generated by squeezing an O-ring?
Does Phelps have materials and gaskets that meet USDA requirements?
Why is post-cured silicone important for rubber for high temperature gasket applications?
What is NEMA Type 1 enclosure?
Can pump and valve packings be used interchangeably?
What is NEMA Type 6P enclosure?
What is Controlled Density in Spiral Wound Gaskets?
Does Phelps supply Chemraz® O-Rings or Perfluoroelastomer?
Does Phelps supply Aflas® or Parker O-Rings?
How do I find out the Pitch Circle Diameter (P.C.D.) of my gasket?
Does Phelps make or supply Viton® O-Rings?
What thickness material should I chose?
  • How high a temperature do Phelps Gasket Sheets support?

    Phelps carries a wide range of products to support various Temperatures, Pressure, and Media. In general Phelps' carries sheets that can go 2400° Read more...


  • What is the difference between EP, EPR, and EPDM?
    Related: Elastomers

    EPR is an abbreviation for Ethylene-propylene copolymer, while EPDM is an abbreviation for Ethylene-Propylene Terpolymer. From a functional standp Read more...


  • Why is my O-ring leaking?
    Related: O-Rings, Cords, Molded Parts

    If you have the O-Ring seal with you, Does the seal appear damaged, deformed, swollen or physically changed in any way? If YES, then please refere Read more...


  • How can I predict the compressive load generated by squeezing an O-ring?
    Related: O-Rings, Cords, Molded Parts

    The force required to compress an O-ring primarily depends on the hardness of the O-ring, its cross section, and the amount of compression. Even if al Read more...


  • Does Phelps have materials and gaskets that meet USDA requirements?

    Yes, Phelps carries many materials with that are Food Grade and meet the FDA and USDA requirements Food Grade Nitrile: http://www.phelpsgaskets.com/p Read more...


  • Why is post-cured silicone important for rubber for high temperature gasket applications?
    Related: Elastomers

    Some silicone rubber compounds utilize curing agents that require a secondary post-cure to finish the curing process. Although most silicones can pass Read more...


  • What is NEMA Type 1 enclosure?

    Designed for indoor use Degree of protection for personnel, against access to hazardous internal components Degree of protection for equipment conta Read more...


  • Can pump and valve packings be used interchangeably?
    Related: Compression Packing

    In general, you some pump packing can be used in valves, but valve packing must not be used in pump application. Some packing is specifically designed Read more...


  • What is NEMA Type 6P enclosure?

    Designed for indoor and outdoor use Degree of protection for personnel, against access to hazardous internal components Degree of protection of the Read more...


  • What is Controlled Density in Spiral Wound Gaskets?
    Related: Spiral Wound Gaskets

    Controlled Density is a term used in Spiral Wound gaskets to ensure optimum filler density across the windings to achieve consistent compression and e Read more...


  • Does Phelps supply Chemraz® O-Rings or Perfluoroelastomer?
    Related: O-Rings, Cords, Molded Parts

    Chemraz® is registered trademark of Greene, Tweed for perfluoroelastomer. Unless you are looking for Chemraz®, Phelps recommends perfluoroelastomer th Read more...


  • Does Phelps supply Aflas® or Parker O-Rings?
    Related: O-Rings, Cords, Molded Parts

    Phelps supplies makes it's own custom and standard O-Rings, in addition to supplying Parker O-Rings. Many customers ask for Aflas® O-Rings, which is a Read more...


  • How do I find out the Pitch Circle Diameter (P.C.D.) of my gasket?

    The pitch circle diameter is the diameter that specifies the centre of bolt holes of your gasket. The P.C.D. is measured from the centre of the bore.


  • Does Phelps make or supply Viton® O-Rings?
    Related: O-Rings, Cords, Molded Parts

    Viton® is a DuPont Dow Elastomers trademark for fluorocarbon elastomer. To avoid trademark infringement, Phelps refers to this type of material under Read more...


  • What thickness material should I chose?

    As a general rule, choose the thinnest material possible for your application because the pressure exerted on the gasket will increase with its thickn Read more...


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