Questions Fréquemment Posées

Browse common questions and their answers below.

• What is a blind flange?
• Does Garlock have dielectric breakdown values for gaskets?
• Does Garlock recommend the use of torques wrenches to tighten flange bolts?
• Does the use of heat traced lines affect a gasketed joint?
• Has Garlock tested gaskets against any fuel additives?
• How does available compressive stress affect gasket performance?
• How do I fill a large gap in flanges? Can I stack gaskets? (Spacers in Flanges)
• How do I get my gaskets to pass bubble tests?
• How do I obtain leachable levels (chemical) for gaskets?
• How is a gasket selection affected by the flange type?
• How much will my gasket compress?
• What is ABS?
• What are the appropriate gaskets for Jet Fuels?
• Why do customers request gaskets that are electrically insulating?
• Which gaskets work in flange isolation kits?
• Which gaskets meet USP (United States Pharmacopeia) requirements?
• Which gaskets have passed a fire test?
• Which gaskets can I use for FDA or USDA applications?
• Which gaskets are recommended for Refrigerants?
• Which gaskets are best for Cryogenic Service?
• What are the best gaskets for monomers?
• What is controlled density? What are controlled density gaskets?
• What are gasket constants?
• What is the correct flange surface finish?
• What is the crush strength of Garlock gaskets?
• What is meant by a cover/retainer plate and why is it required with an all-rubber split seal?
• Which rubber material should I select for my oil seal?
• Does Garlock Interchange Oil Seals Made By Other Manufacturers?
• What Is The Purpose Of The Spring Used In Oil Seals?
• How Long Does an Oil Seal Last?
• How Do I Handle a Grooved Shaft When Replacing an Oil Seal?
• Should I Glue The Ends of My Split Seal Back Together When Installing?

• What does it mean if I am given the pH of the solution?
• What do I need to be concerned with when gaskets are installed in grooves or recesses?
• What is a full face gasket?
• What is Garlock's position on the reuse of gaskets?
• What gaskets are recommended for chlorine service?
• What gaskets are recommended for oxygen (O2) service?
• What gaskets can be used with aviation gasoline?
• What gaskets can I use for steam? What is superheated steam?
• What gaskets can I use for strong oxidizers?
• Which gaskets are ABS type approved?
• Where can I find "M" and "Y" values for flange design?
• Where are the values for Thermal Conductivity?
• Which thickness is best for a gasket?
• What gaskets are recommended for Gasohol?
• What's the best way to control Emissions from gasketed joints?
• What is a modulus of elasticity for gasket material?
• What gasket problems can be caused by pressure spikes?
• What is the recommended shelf life for gaskets?
• Does Garlock have any gaskets approved for military specifications?
• Does Garlock have any gaskets that are approved to NSF/ANSI 61 standard for drinking water?
• Does Garlock have data on Radiation Resistance?
• Which gaskets work for steam and superheated steam?
• What are controlled density gaskets?
• Does Garlock have gaskets that meet 3A?
• Does Garlock have installation instructions?
• Which Direction Should the Lip Face When Installing My Oil Seal?
• Which Lip Seal Material(s) Should I Use if My Application Requires FDA Compliance? (i.e. Sugar, Potatoes, etc.)
• Which lip seal material or design might be recommended for an application with harsh chemicals? (i.e. sulfuric acid)
• I’ve removed my leaking oil seal from the equipment. How do I know what size oil seal I need?
• How Do You Measure Oil Seals?
• Should I Select a Seal with a Metal Case or Rubber OD?