COMPRESSED CARBON AND GRAPHITE GASKETS & SHEET
CFG (Corrugated Flexible Graphite) Gaskets
| CFG corrugated 316 stainless steel metal core gaskets with flexible graphite sealing surface will maintain a tight seal in a wide range of initial seating stress. This makes it the universal replacement for spiral wound, double jacketed and traditional flexible graphite gaskets. It is suitable for virtually all applications found in the following industries: refining, chemical, petochemical, pulp & paper, power generation and steel mill. |
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Heat Exchanger Gasket Shapes
| There are many styles of heat exchanger gaskets, most have complicated rib designs or partitions. While some of the most common designs are shown below, we can provide almost any configuration of heat exchanger type gasket utilizing our CFG technology. |
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| When inquiring and ordering, please specify gasket shape by using the letter to the left of the style of the gasket required as shown above. Along with the ID, OD, and thickness (t), we will require radius (R), flange width (W), and distance from the center of the rib to the center of the gasket (P). |
Durlon Compressed Carbon Fiber | |
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| 8300 | 9400 |
| Premium Solutions Durlon 8300 is our premium grade, multi-service high strength carbon and NBR gasket sheet, designed to handle the extremes of pressure and temperature. As with all of our premium products, the versatility of this sheet enables the end user to standardize on one sheet for a multitude of applications, and avoid the confusion of having to choose from several different sheets. Specifically designed for applications commonly found in the power generation and chemical processing industries, the 8300 sheet maintains excellent sealability during thermal cycling even in steam, hot oil, aliphatic hydrocarbons, natural gas, gasoline, solvents, inert gases, mild alkalis and acids. Benefits Chemical and Thermal Versatility
| Premium Solutions Durlon 9400 is made from pure PTFE resins and carbon fillers designed for use in piping and equipment in chemical, pharmaceutical, food and other severe service industrial applications where chemical resistance and sealability are paramount. This sheet does not exhibit cold flow problems associated with conventional PTFE. It has been developed to be used in hydrofluoric acid, anhydrous hydrogen fluoride (AFH) in railroad tankcars and chemical plant applications where barium sulfate PTFE may not prove suitable. Unique Characteristics
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Typical Physical Properties
| DURLON Style | 8300 | 9400 | CFG | ||
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| Color | Black | Black | Black | ||
| Fluid Services | Saturated Steam, Oils, Dilute Acids & Alkalis, Solvents, Hydrocarbons | Acids, Aqueous and Anhydrous Hydrogen Fluoride, Steam, Fuels, Oils, Alcohols | Steam, Oil, Water, Mild Alkalis, Hydrocarbons, Mild Acids, Solvents | ||
| Fiber / Resin | Fiber: Carbon | Resin: Pure PTFE | Fiber: Graphite | ||
| Binder / Filler / Insert | Binder: NBR | Filler: Carbon | Insert: 316 S/S | ||
| Density (lbs. / Cu. Ft.) | 100 | - | - | ||
| Temperature Max. Continuous | -100 to 800ºF 600ºF | -350 to 550ºF 500ºF | -328 to 850ºF Steam: 1200ºF | ||
| Pressure Max. | 1500 psig | 1500 psig | 3000 psig | ||
| Compressibility ASTM F36 | 8-16% | 5-12% | - | ||
| Recovery ASTM F36 | 50% | 40% | - | ||
| Creep Relaxation ASTM F38 | 18% | 30% | - | ||
| Tensile Strength Across Grain ASTM F152 | 1800 psi | 2100 psi | - | ||
| Fluid Resistance pH Range (Ambient) | 3-11 | 0-14 | 0-14 | ||
| ASTM F146 - IRM 903 Oil, 5 hours @ 300ºF | |||||
| Thickness Increase | 0 to 10% | - | - | ||
| Weight Increase | 10% | - | - | ||
| ASTM F146 - ASTM Fuel B, 5 hours @ 70ºF | |||||
| Thickness Increase | 0 to 10% | - | - | ||
| Weight Increase | 12% Max | - | - | ||
| Leachable Halides | 500 ppm max. | - | - | ||
| Leachable Chlorides | 200 ppm max. | - | - | ||
| Leakage: DIN 3535 | 0.05 cc/min. | 0.01 cc/min. | <0.01 cc/min. | ||
| Volume Resistivity ASTM D257, 1/16" | 5 x 109 ohm-cm | 61 ohm-cm (ASTM D991) | - | ||
| Dielectric Breakdown ASTM D149, 1/16" | 0.04 kv/mm | 1 kv/mm | - | ||
| Gasket Factors Gb psi, 1/16" a, 1/16" Gs psi, 1/16" | 512 0.36 0.13 | 1701 0.173 99 | (3/32" Tk) 557 psi 0.325 2.21 psi | ||
| Flexibility ASTM F147 | 10x | - | - | ||
| Line Call-Out ASTM F104 | F712120-B3E22M5 | F425111-A9B5E11K6M6 | - | ||
| Note: ASTM and DIN properties based on 1/16" sheet thickness, except ASTM F38, which is based on 1/32" sheet thickness (8300 & 9400 only; all CFG gaskets are 3/32" thick). This is a general guide only and should not be the sole means of accepting or rejecting this material. The data listed here falls within the normal range of product properties, but should not be used to establish specification limits nor used alone as the basis of design. | |||||
| Warning: These materials should never be recommended when both temperature and pressure are at the maximum listed. Properties and applications shown are typical. No application should be undertaken by anyone without independent study and evaluation for suitability. Never use more than one gasket in one flange joint, and never reuse a gasket. Improper use or gasket selection could cause property damage and / or serious personal injury. Data reported on this web page is a compilation of field testing, field service reports and / or in-house testing. While the utmost care has gone into publishing the information contained herein, we assume no responsibility for errors. Specifications and information contained on this web page are subject to change without notice. |
For an explanation of Gb, a & Gs factors, torque info & gasket installation go to our Durlon Technical Info page.
Frenzelit Compressed Graphite Sheet
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Style 7085-GrapeStyle 7085 is Frenzelit's high pressure compressed non-asbestos gasket material and it contains 75% pure graphite. This material's higher temperature and pressure capability is due to its density. This gasket material's higher tensile strength makes it ideal for gaskets with narrow flanges or ribs. The 15% compressibility makes it the material to use in applications where assembly tolerances will not allow for 45% compressibility. This sheet is easily identified by its grape colored "easy release" non-stick coating. This is an excellent chemical sheet. |
Style 7075-CranberryStyle 7075 is Frenzelit's general service compressed non-asbestos gasket material and it contains 75% pure graphite. This unique gasket sheet has great flexibility. It is easily identified by the cranberry colored "easy release" non-stick coating. This sheet's 45% compressibility allows for better sealing for those less than perfect flanges. This material does not cold flow when compressed with excessive torque. It likes stress and performs its best when compressed to 5000 PSI and beyond. This is an excellent steam sheet. |
| Frenzelit manufactures the only Compressed Non-Asbestos gasket material on the market that: can withstand maximum temperatures in continuous operation, have a pH rating of 2-14 and have a non-stick coating that allows used gaskets to literally fall off the flange. The Gasket Installation Procedure must be followed to assure optimum performance in your gasket application. Our Compressed Graphite easily replaces the competitions non-asbestos compressed sheets. |
Frenzelit Compressed Graphite Sheet
| Style 7085 | Style 7075 | |
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| 925ºF | Temperature* | 825ºF |
| 2000 PSI | Pressure* | 1500 PSI |
| Grape | Color | Cranberry |
| Graphite | Composition | Graphite |
| 2-14 | pH | 2-14 |
| < 100ppm | Leachable Chlorides | < 100ppm |
| 1/16" - 600,000 | P x T Values* | 1/16" - 350,000 |
| DIN Approved | Fire Safe Tested | DIN Approved |
| .020" Through 1/8" | Thickness | .020" through 1/4" |
| 60" x 60", 60" x 80" | Sheet Size | 60" x 60", 60" x 80" |
| ASTM F104 Tests - 1/32" Thick | ||
| F38 B Creep Relaxation | ||
| 12% | 22 hours @ 212ºF | 15% |
| 30% | 22 hours @ 392ºF | 35% |
| F 37 A Sealability | ||
| .20 ml/hr | Fuel A @ 14.5 PSI/Gasket Load 1000 PSI | .25 ml/hr |
| F 37 B Sealability | ||
| .06 ml/hr | Fuel A @ 9.8 PSI/Gasket Load 500 PSI | .05 ml/hr |
| .075 ml/hr | Nitrogen @ 30 PSI/Gasket Load 3000 PSI | .1 ml/hr |
| F 146 Thickness Increase | ||
| < 2% | Oil #3, 5 Hrs @ 300ºF | < 3% |
| < 1% | Fuel B, 5 Hrs @ 73ºF | < 4% |
| F 36 A Compressibility | ||
| 15% | 5000 PSI Gasket Load | 45% |
| 40% | F 36 A Recovery | 10% |
| 1500 PSI | F 152 Tensile Strength | 600 PSI |
| DIN 3535 Part 6 Gas Permeability | ||
| .02 cc/min | Nitrogen @ 580 PSI/Gasket Load 4640 PSI | .2 cc/min |
| DIN 52913 Stress Relaxation @ 7250 PSI | ||
| > 6500 PSI | 16 Hrs @ 347ºF | > 6500 PSI |
| > 5000 PSI | 16 Hrs @ 572ºF | > 5000 PSI |
| DIN 3754 48 Hrs @ 75ºF Thickness Increase | ||
| 6% | H2SO4 Sulfuric Acid 65% Concentration | 7% |
| .5% | NaOH Sodium Hydroxide 25% Concentration | 3% |
*Note: As in all compressed sheets the P x T values decrease significantly as the thickness increases. Our maximum temperature, pressure and P x T values cannot be exceeded.
Klinger Flexible Graphite Style SLS
Characteristics
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| Metal Insert | Adhesive Bonded | 0.002" 316 Stainless Steel Foil |
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| Creep Relaxation | ASTM F38B (1/32") | 10% |
| Sealability | ASTM F37A (1/32") | 0.5 ml/min |
| Compressibility | ASTM F36A | 40-45% |
| Recovery | ASTM F36A | 10-15% |
| Purity of Graphite | Minimum | 95% |
| Leachable Chloride Content | F.S.A. Method (Typical) | 50 ppm |
| Density | Pounds per Cubic Foot | 70 |
| Color | Top/Bottom | Silver Grey |
| Klinger Flexible Graphite is also available in a non-reinforced sheet (Style HL) and with a .004" 316 stainless steel tang reinforcement (Style PSM) | ||
Klinger Pressure and Temperature Graphs
Material Thickness: 1/16"
SLS Liquids
| SLS Gases & Steam
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About the Klinger Pressure & Temperature Graphs
| The pressure/temperature charts shown for Klingersil compressed graphite materials are the most current method of determining the suitability of a gasket material in a known environment. Use the pressure and temperature graphs to select the most suitable Klingersil material for your application. {1} In area one, the gasket material is suitable using common installation practices subject to chemical compatibility. |
{2} In area two, appropriate measures are necessary for installation of the gasket to insure maximum performance. Please call or refer to the Klinger-expert software system for assistance.
{3} In area three, DO NOT INSTALL GASKETS in these applications without first referring to the Klinger-expert software system or contacting Thermoseal Inc.'s technical support service. |
| These graphs were developed from testing Klinger materials. Do not use them for competitor's materials since non-asbestos gasketing materials do not have service equivalents. | |