Die Formed Flexible Graphite
Formed Flexible Graphite is proven to be the solution to keeping VOC levels on Valves and pumps to an acceptable level. What begins as Ribbon Pack, becomes custom-shaped parts. With the addition of metal end caps, wire mesh or braided packing, flexible graphite can be made to resist extrusion and maintain a seal better than any other fluid sealing product.
Graphite Comes In Many Forms Including Sheet, Cut Gaskets, And Die Formed Rings. It Is Formed Into Specific Shapes Including Cone, Square, Round, And Rectangular, To Seal Valves Or Pumps From Leakage. It Starts As A Sheet Which Is Then Stripped So It Can Be Wound Into A Die For Forming.
GRAFOIL® Flexible Graphite Seals & Gaskets
GRAFOIL flexible graphite, became a highly successful replacement for asbestos in high temperature sealing and chemical applications in the 1980’s.
Flexible graphites flexibility, resilience, and conformability enables AS&P to provide a variety of styles and products, providing our customers with individually designed flexible graphite based products and solutions for diverse applications in a wide range of industries. American Seal & Packing (AS&P) supplies GRAFOIL® Flexible Graphite in the following forms: Sheet, Braided, Die Formed, Cut Gaskets and Ribbon Pack and cord stock.
Ribbon Pack® Is A Registered Trademark Of Graftech. Flexible Graphite Stripped And Crinkeled Allows The Graphite To Be Wrapped Around A Stem, Shaft Or Sleeve Without Cracking. Crinkeled Flexible Graphite Is Used For Valves In The Field, Or To Make Die Formed Packing Sets. The Most Common Industries That Rely On This Form Of Flexible Graphite Include:. Refineries,Solar Power Plants, Steam Co_Generation, Nuclear, Fossil Fuel, Chemical, Aerospace, Etc. Ideal For Chemical And High Temperature Applications.
Once The Flexible Graphite Has Been Slit, Crinkeled And Wrapped Around The Die Mandrel, It Is Compressed With The Mating Die To Form A Ring.
Die Formed Cup And Cone Design. Often Provides The Lowest Of Leak Rates. Now A Standard In The Valve Industry. Combination Sets With Peek Or Altering Density Rings Are Solving API Leakage Requirments.Die Formed Flexible Graphite Center Rings
Flexible Graphite Can Extrude. Having The Advantage Of High Conformity Also Has The Disadvantage Of Being Soft Enough To Be Pushed Out Under High Pressure.The Solution To This Enharent Problem Is The Addition Of Stianless Steel Or Inconel Wire. Various Percentages Of Wire Or End Caps Provide Varied Performance. In Applications With High Pulsations And Heat Such As Exahust Gaskets A High Percentage Of Wire Is Desired. In Applications Where Maximum Seal Effectness And Conformity Are Required Graphite Would Be The Major Component But Can Have Metal End Caps For Containment Under Pressure.
Die Formed Graphite Sets For Valves Lowf Leak Rates Are Always The Objective And We Have Multiple Ways To Get Your There. These Sets Combine Braided Flexible Graphite Endrings That Contain Wire For Pressure Containment And A Cup And Cone Base. We Have Provided Many Variations. Working With The Valve Industry To Solve Problems Of Effectivness, Cost And Delivery.
Carbon Yarn End Rings In Graphite Sets Are The Most Common Addition To A Flexible Graphite Set. The Reason Carbon Yarn Works So Well Is Beacuse Like Graphite It Is Also 95+% Carbon. It Handles The Same Temperature. Beacuse It Is Braided It Provides The Dual Funtion Of Being A Wiper And Anti-Extrusion Device. This Is Especially Helpful In Rising Stem Valves.
Quality: One Caution With Flexible Graphite Is To Know What You Are Getting. Graphite May All Look The Same, But The Quality Of The Graphite Varies Greatly. We Always Incurage Specifying The Brand Of Graphite You Use. Grafoil Is Always Our First Recommendation.
Nothing seals as well as Grafoil®. It is a unique material in that it can diced into a 1000 peices and then formed into a single piece again. We offer the quality flexible graphite gasket material in sheet or cut gaskets too. If a refinery or chemical plant has a VOC leaks, chances are we are sealing it with flexible graphite. If you want to be assured of quality, specify Grafoil® . We’re finding better ways to serve our customers all the time. In addition to our expanding line of industrial seals, we’re updating our production capabilities and streamlining our process to provide you quality parts when you need them.