CHEMRAZ® - Greene Tweed

1 Seals that Withstand the Test of Time123 Medical & BiotechnologyCHEMRAZ PERFLUOROELASTOMERSCHEMRAZ PERFLUOROELASTOMERSC hemraz, a proprietary Greene , Tweed compound, has thebroadest chemical resistance of any elastomeric material. Itcombines the resilience and sealing force of an elastomer withchemical resistance approaching that of PTFE. Chemraz o-rings last longer and seal better in harsh environments at awide range of temperatures from -20 F to 615 F. They solvesome of the most difficult sealing problems in many indus-tries, while offering outstanding in-use cost a result of these performance advantages, Chemraz sealsand gaskets are ideal for a number of medical and life-sciencesapplications, including:Chromatography EquipmentUsed in a wide range of chemical analysis, chromatographyequipment is designed for precision, robustness and must withstand a wide variety of chemicals and maintainseal performance under high pressures.

2 Chemraz seals areresistant to aggressive chemical environments and have greaterresistance to high pressures than traditional elastomer Analytical EquipmentInnovations in analytical equipment, including microfluidicsand lab-on-a-chip, are at the leading edge in genetic and pharmaceutical research. Seals must be highly reliable toensure test samples are secure. Chemraz is highly resistant to compression set, fatigue and degradation in a wide range oftemperature and chemical Systems and DevicesIn vitro diagnostics requires the most advanced seals to ensurereliability and purity.

3 Hematology equipment and other hospital systems are critical to patient care. Chemraz seals areselected in critical IVD applications where performance andreliability are most ValvesA critical component in many clinical and analytical chemistrydevices, solenoid valves are increasingly being exposed tomore aggressive chemicals. Traditional seals and sealing surfaces are no longer satisfactory. Chemraz has significantlybetter chemical resistance and superior mechanical propertiesthan traditional elastomers and can be produced in a variety ofseal and gasket forms to meet demanding requirements of anysolenoid valve o-rings, gaskets and seals offer superior properties totraditional elastomer products.

4 These include the following:Chemical ResistanceChemraz seals and gaskets are most often selected for aggres-sive fluid handling applications. Chemraz is resistant to abroader range of chemicals than silicone, EPDM, Viton andother standard elastomers, including inorganic and organicacids, bases, ketones, esters, aldehydes, alcohols and repairs and downtime caused by degradation of equip-ment seals is minimized with Chemraz seals and to Compression SetChemraz seals and gaskets are ideal for medical equipmentexposed to a broad range of temperatures.

5 Particularly forseals exposed to high temperature and pressure, compressionset is a leading cause of seal leakage. Chemraz seals and gaskets resist leakage caused by compression set even at temperatures up to 615 F. Withstands Steam SterilizationChemraz seals and gaskets have exceptional resistance tosteam above 350 F. Chemraz seals and gaskets can be repeat-edly sterilized by all conventional methods without concernof unit at Central Montgomery Medical Center(Pennsylvania, USA)The Most Chemical-Resistant Elastomeric Parts AvailableBLACK CHEMRAZC hemraz 505: A general-purpose compound that resiststhe broadest chemical range of any single 605: A higher temperature compound that dis-plays superior physical properties.

6 Exhibits the best resistanceto steam above 300 F. Often used in demanding dynamicapplications such as diaphragms. Chemraz 605 has recentlyreceived USP Class VI 615: An excellent compound for high tempera-ture sealing applications. In addition to having a temperaturerating up to 615 F, this compound exhibits the lowest compression set of any known perfluoroelastomer on the market CHEMRAZC hemraz 584 & 585:Selected for applications wherestrong oxidizing fluids are present, and in hot aqueous 526:Ideal for use in high pressure applications.

7 WHITE CHEMRAZC hemraz 514 & 517:White compounds are specified inapplications where contamination from carbon black must beprevented. Not to be used in acids, aldehydes, ethylene oxide,or propylene grades of Chemraz are available upon requestProperties of Black ChemrazCompoundChemraz Chemraz ChemrazNumber505605615 Hardness75A80A80 AColorBlackBlackBlackTensile, PSI17502150183050% Mod., PSI450420360100% Mod., PSI115013101090 Elongation, %140130135TR1050% Stretch, F+5+6+9 Compression Set (70 hours at 400 F)*#214 O-Ring, %252016 Button, %131114 CChheemmrraazz 661155 iiss nnoott rreeccoommmmeennddeedd ffoorr lloonngg tteerrmm eexxppoossuurree ttoo sstteeaamm aabboovvee 330000 FFChoosing The Right Chemraz CompoundProperties of Specialty ChemrazCompoundChemraz Chemraz ChemrazNumber584585526 Hardness70A80A95 AColorCreamCreamBlackTensile, PSI13001550258010% Mod.

8 , PSI--57550% Mod., PSI350625-100% Mod., PSI7801240-Elongation, %145130100 Compression Set (70 hours at 400 F)*#214 O-Ring, %353530 Button, %162214 Properties of White ChemrazCompoundChemrazChemrazNumber51451 7 Hardness70A80 ColorWhiteWhiteTensile, PSI1460160050% Mod., PSI300540100% Mod., PSI6801050 Elongation, %190165TR1050% Stretch, F+5+6 Compression Set (70 hours at 400 F)*#214 O-Ring, %2525 Button, %1312**AASSTTMM DD339955,, MMeetthhoodd BBStatements and recommendations in this publication are based on our experience and knowledgeof typical applications of this product and shall not constitute a guarantee of performance nor amodification or alteration of our standard warranty which shall be applicable to such , Tweed & Co.

9 Is an Equal Opportunity EmployerChemraz is a registered trademark of Greene , Tweed & is a registered trademark of DuPont Dow ElastomersCopyright 2000 Greene , Tweed & Co. 10 Stability70 Hours at 450 FTensile, % Change-9 Elongation, % Change+40 Hardness, pts Change-4 Estimated Service Temperatures(Vary by compound)Low Temperature Limit, F-20 High Temperature Limit, F61545678 Miscellaneous PropertiesSpecific Gravity (approximate) Initiation( C)approx. 400 Specific Heat(cal/g C) Conductivity(cal/cm. sec. C)b x 10-4 Glass Transition Temperature (DSC)( C)-19 Gerhman Torsion Test T50( C)-21 Impact Resilience(%)12 Tabor Abrasion CS-17, 1000 g(mg)2 Flammability (oxygen index)(%)>95 Electrical Characteristics (non-carbon compound)Volume Resistance( -cm) x 10-3 Dielectric Constant (23 C, 103Hz) Factor (23 C, 103Hz)2 x 10-3 Dielectric Breakdown Strength ( mm) Index (raw rubber)nD(23 C) x 10-4 Coefficient Thermal Expansion40 - 125 x 10-4125 - 230 x 10-4 Ordering InformationTo order Chemraz o-rings, use a part number derived as follows:Example.

10 The typical part number 9026-505 describes a Chemraz505 o-ring of " ID and " , Tweed & Co. Medical Products22007755 DDeettwwiilleerr RRooaadd,, BBooxx 330055 KKuullppssvviillllee,, PPAA 1199444433 TTeell:: 221155-225566-99552211 FFaaxx:: 221155-225566-00118899 WWeebbssiittee:: Physical Properties of Chemraz Visit us on the web