DOW CORNING® 995 Silicone Structural Glazing Sealant - Geocel

Product InformationdcDOW CORNING ® 995Silicone Structural Glazing SealantFEATURES" High ultimate tensile strength sealantideally suited for structural bonding andprotective glazing applications" Odorless and non-corrosive cure system" Cures to form an extremely toughelastomeric rubber ensuring a durable,flexible, watertight bondBENEFITS" Excellent weatherability and a highresistance to ultra-violet radiation, heatand humidity, ozone and temperatureextremes" Excellent mechanical properties" Successfully tested for use in protectiveglazing applications" Excellent unprimed adhesion to a widerange of substrates including coated,enameled and reflective glasses,anodized and polyester coated or paintedaluminum profiles including mostfluoropolymer based paints like Kynar" Meets global standards for structuralglazing (American, China, Europe)APPLICATIONS" DOW CORNING 995 Silicone Structural Glazing Sealant is a one component,neutral curing elastomeric sealant specifically formulated for silicone structuralglazing and protective glazing applications.TYPICAL PROPERTIESSpecification writers: These values are not intended for use in preparing specifications.Please contact your local Dow Corning sales representative prior to writing specifications onthis product.Test method* Property Unit ValueAs suppliedColorBlack,white,grayMIL-S-8802 Tack-free time, 50% RH minutes 65Curing time 25ºC (77ºF) at 50% R.H. days 7-14Full adhesion days 14-21Flow, sag or slump mm or inches 0.1Working time minutes 10-20Specific gravity 1.339As cured - after 7 days at 25ºC (77ºF), 50% RHASTM D2240 Durometer hardness, shore A points 40ASTM D0412 Ultimate tensile strength psi (MPa) 350 (2.41)Ultimate elongation % 525ASTM D0624 Tear strength - die B ppi 49ASTM C0794 Peel strength ppi 40As cured - after 21 days at 25ºC (77ºF), 50% RHASTM C1135 Tensile at 25% elongation psi (MPa) 48 (0.33)Tensile at 50% elongation psi (MPa) 75 (0.51)ASTM C719 Joint movement capability % ±50As cured - after 21 days at 25ºC (77ºF), 50% RHand subjected to 4,500 hours QUV ASTM G-53ASTM C1135 Tensile at 25% elongation psi (MPa) 50 (0.34)Tensile at 50% elongation psi (MPa) 78 (0.53)* ASTM: American Society for Testing and Materials.

DESCRIPTIONDOW CORNING 995 SiliconeStructural Glazing Sealant is a onecomponentneutral curing siliconesealant designed specifically forstructural bonding applications of glassand metal in factory or field situations.The rate of surface cure and cure-indepthof most one-component RTVsilicone sealants is affected by thetemperature and humidity of theenvironment.However, anenvironment of high temperatures incombination with high humidity mayslow the surface cure rate ofDOW CORNING 995 SiliconeStructural Glazing Sealant.TECHNICALSPECIFICATIONS ANDSTANDARDSDOW CORNING 995 SiliconeStructural Glazing Sealant has beeninternally tested and is designed tomeet or exceed the test requirementsof:" Federal Specification TT-S-001543A(COM-NBS) Class A for siliconebuilding sealant" Federal Specification TT-S-00230C(COM-NBS) Class A forone-component building sealant" ASTM Specification C-920 Type S,Grade NS, Class 25, Use NT, G and A" ASTM C1184 Standard Specificationfor Structural Silicone Sealan" Chinese specification GB 16776 forstructural glazing" SNJF VEC.DOW CORNING 995 SiliconeStructural Glazing Sealant exhibits ahigh level of physical properties andadhesive performance, which areretained even after aging as detailed byEOTA ETAG 002 and prEN 13022European Standards.HOW TO USEPlease consult the Dow CorningSilicone Structural Glazing Manual forcomplete design, state-of-the-artinstallation guidelines and joint design.Specific advice is available from yourlocal Dow Corning sales office.PreparationClean all joints and glazing pockets,removing all foreign matter andcontaminants such as grease, oil, dust,water, frost, surface dirt, old sealants,or glazing compounds and protectivecoatings.Application methodInstall back-up material or joint filler,setting blocks, spacer shims and tapes.Mask areas adjacent to joints to ensureneat sealant lines.Primer is generallynot required on non-porous surfaces,but may be necessary for optimalsealing of certain porous surfaces.Atest placement is always recommended.Apply DOW CORNING 995 SiliconeStructural Glazing Sealant in acontinuous operation using a positivepressure.(The sealant can be appliedusing many types of air-operated gunsand most types of bulk dispensingequipment).Before a skin forms(typically within 10 minutes), tool thesealant with light pressure to spread thesealant against the backing materialand joint surfaces.Remove maskingtape as soon as the bead is tooled.HANDLING PRECAUTIONSProduct safety information required forsafe use is not included.Beforehandling, read product and safety datasheets and container labels for safe use,physical and health hazard information.The material safety data sheet isavailable on the Dow Corning websiteat www.dowcorning.com. You can alsoobtain a copy from your localDow Corning sales representative orDistributor or by calling your localDow Corning Global Connection.USABLE LIFE ANDSTORAGEWhen stored at or below 30ºC (86ºF) inthe original unopened containers, thisproduct has a usable life of 12 monthsfrom the date of production.PACKAGINGThis product is available in305 and 310ml disposable cartridges,17 liter bulk containers, 7.5 liter pails,170 liter drums, depending on locationof purchase.Please contact your localDow Corning sales office forpackaging range availability.COLORSThis product is available in black, grayand white.Please contact your localDow Corning sales office for localcolor range availability.LIMITATIONSDOW CORNING 995 SiliconeStructural Glazing Sealant should notbe applied:" To building materials that bleed oils,plasticizers or solvents materials suchas impregnated wood, oil-based caulks,green or partially vulcanized rubbergaskets or tapes." In totally confined spaces as thesealant requires atmospheric moisturefor cure." When surface temperatures exceed60ºC (140ºF)." Where painting of the sealant isrequired, as the paint film may crackand peel." To surfaces in contact with food thissealant does not comply with FederalFood and Drug Administration foodadditiveregulations." In below-grade applications." For use as an interior penetration firestop sealing system." In horizontal floor joints whereabrasion and physical abuse are likelyto be encountered." To frost-laden or damp surfaces." For continuous immersion in water.DOW CORNING 995 Silicone Structural Glazing Sealant2Ref.no.62-1260-01

This product is neither tested norrepresented as suitable for medical orpharmaceutical uses.Dow Corning shall not be held liablefor any possible claims arising fromstructural glazing use of this productfor projects, which have not beenspecifically approved by Dow Corning.HEALTH ANDENVIRONMENTALINFORMATIONTo support Customers in their productsafety needs, Dow Corning has anextensive Product Stewardshiporganization and a team of ProductSafety and Regulatory Compliance(PS&RC) specialists available in eacharea.DOW CORNING SPECIFICALLYDISCLAIMS ANY OTHEREXPRESS OR IMPLIEDWARRANTY OF FITNESS FOR APARTICULAR PURPOSE ORMERCHANTABILITY.DOW CORNING DISCLAIMSLIABILITY FOR ANYINCIDENTAL ORCONSEQUENTIAL DAMAGES.WE HELP YOU INVENT THEFUTURE."www.dowcorning.comFor further information, please see ourwebsite, www.dowcorning.com orconsult your local Dow Corningrepresentative.LIMITED WARRANTYINFORMATION - PLEASEREAD CAREFULLYThe information contained herein isoffered in good faith and is believed tobe accurate.However, becauseconditions and methods of use of ourproducts are beyond our control, thisinformation should not be used insubstitution for customers' tests toensure that Dow Corning's products aresafe, effective, and fully satisfactoryfor the intended end use.Suggestionsof use shall not be taken asinducements to infringe any patent.Dow Corning's sole warranty is that theproduct will meet the Dow Corningsales specifications in effect at the timeof shipment.Your exclusive remedy for breach ofsuch warranty is limited to refund ofpurchase price or replacement of anyproduct shown to be other than aswarranted.DOW CORNING 995 Silicone Structural Glazing Sealant3Ref.no.62-1260-01

DOW CORNING 995 Silicone Structural Glazing SealantWE HELP YOU INVENT THE FUTURE.is a trademark of Dow Corning Corporation.4 28/01/2003 DOW CORNING is a registered trademark of Dow Corning Corporation.Ref.no.62-1260-01 DC 4422 ©2002 Dow Corning Corporation.All rights reserved.