Sikaflex 221 Multi-purpose Polyurethane Adhesive Sealant grey 300ml

Sikaflex®-221 is a high-strength 1C polyurethane sealant suitable for a wide range of substrates. It is ideal for elastic sealing and basic bonding applications both indoors and outdoors.Pack size: 300 ml cartridgeAlso available in: / , 23 l pail, 195 l drumColor: steel grey (also available in and )ApplicationsElastic sealing on metals, primers, paints, plastics, ceramicsSuitable for bodywork, equipment, ventilation, containers, vehicle constructionInterior joints and basic bonding tasksFeaturesGood adhesion to many substrates without primerCan be sanded and paintedUV- and aging-resistant, low odor, non-corrosiveCertified to EN 45545-2 R1/R7 HL3 (rail standard)Moisture-curing – reacts with atmospheric humidityNSF-approved for incidental food contact (Only in certain regions)Potable water approved according to AS4020 (Australia)Temperature resistant from -50 °C to +90 °C (short-term up to 140 °C)Technical DataChemical Base1C PolyurethaneColors, , CuringMoisture curingDensity (depending on color)approx. 1.3 kg/lSag ResistanceGoodApplication Temperature+5 °C to +40 °CSkin Formation Time (23 °C / 50 % RH)approx. 60 minutesVolume Changeapprox. 5 %Shore A Hardness (ISO 48-4)40Tensile Strength (ISO 527)1.8 MPaElongation at Break (ISO 527)500 %Tear Strength (ISO 34)7 N/mmTemperature Resistance-50 °C to +90 °C (short-term to 140 °C)Shelf Life12 months (if stored below 25 °C)Application InstructionsApply using a manual, pneumatic or electric cartridge gun (e.g. )Use suitable nozzles such as the or Substrates must be clean, dry, and grease-freePre-treatment recommended using (for glass/metal)Smooth before skin formation using Remove uncured material with , cured product must be removed mechanicallyPaintabilityPaintable after skin formationFor best results: fully cure before paintingCompatibility with 1C-PUR and 2C acrylic paints should be testedChemical ResistanceResistant to fresh and seawater, diluted acids and alkalisShort-term resistant to fuels, oils and greasesNot resistant to concentrated acids/alkalis or organic solventsSikaflex 221, PU sealant, 1C adhesive, polyurethane, elastic joint, paintable, EN45545, cartridge accessoriesHazard Statements (CLP)Signal word: Danger.Hazard Statements (H-Sentences)H334: May cause allergy, asthma-like symptoms or breathing difficulties if inhaled.H373: May cause damage to organs (central nervous system) through prolonged or repeated exposure by inhalation.Precautionary Statements (P-Sentences)Prevention:P260: Do not breathe mist or vapour.P284: Wear respiratory protection if ventilation is insufficient.Response:P304 + P340: IF INHALED: Move person to fresh air and keep comfortable for breathing.P342 + P311: If experiencing respiratory symptoms: Call a POISON CENTER/doctor.Disposal:P501: Dispose of contents/container in accordance with local regulations. Information on product safety (Manufacturer, Contact)Sika Deutschland GmbH, Kornwestheimer Str. 103-107, 70439 Stuttgart, GERMANY, +49 711 8009-0, , www.sika.com