Technical Data Sheet LOCTITE 660 December -2009 PRODUCT DESCRIPTION 100 LOCTITE 660 provides the following product characteristics: 75 Technology Acrylic Chemical Type Urethane methacrylate LMS Appearance (uncured) Metallic gray paste 50 Fluorescence No Components One component - 25 requires no mixing Viscosity High Cure Anaerobic 0 Secondary Cure Activator 1min 5min10min 30min 1h 3h 6h 24h 72h Cure Time Application Retaining Strength High Cure Speed vs. Bond Gap The rate ofcure willdepend on the bondline gap. The following LOCTITE 660 is designed forthe bonding of cylindrical graph shows shear strength developed with time on steel pins fitting parts, particularly where bond gaps can approach 0.50 and collarsat differentcontrolledgaps and tested according to mm (0.02in.).The product cures when confined in the absence ISO10123. of air between close fitting metal surfaces and prevents 100 loosening and leakage fromshock and vibration .This product possesses excellent gap cure characteristics . Typical applications include restoring correct fits on worn shafts, spun 75 bearings, and damaged keyways . NSF International 50 Registered to NSF Category P1 foruse as a sealant where there is no possibilty of foodcontact in and around food processing areas. Note: This is a regionalapproval. Please 25 contact your local Technical Service Center for more information and clarification. 0 1min 5min10min 30min 1h 3h 6h 24h 72h TYPICAL PROPERTIES OF UNCURED MATERIAL Cure Time Specific Gravity 25 C 1.13 Cure Speed vs. Temperature Flash Point -See SDS The rate ofcure willdepend on the temperature . The graph Viscosity, Brookfield -HBT, 25 C, mPas (cP) : LMS below shows the shear strength developed with time at Spindle TB,speed 0.5rpm, , 1,000,000 to 2,000,000 Helipath differenttemperatures on steel pins and collars and tested LMS Spindle TB,speed 5.0rpm , 150,000 to 350,000 according to ISO10123. Helipath TYPICAL CURING PERFORMANCE Cure Speed vs. Substrate The rate ofcure willdepend on the substrate used. The graph below shows the shear strength developed with time on steel pins and collars compared to differentmaterials and tested according to ISO10123. 0.154 mm 0.27 mm Zinc dichromate Steel Aluminum % of Full Strength on Steel % of Full Strength on SteelActivator 7471 TDS LOCTITE 660 , December -2009 100 Hot Strength Tested at temperature 100 75 75 50 4 C 50 25 25 0 1min 5min10min 30min 1h 3h 6h 24h 72h Cure Time 0 -50 0 50 100 150 Cure Speed vs. Activator Temperature, C Where cure speed is unacceptably long,or large gaps are present, applying activator to the surface willimprove cure Heat Aging speed .The graph below shows the shear strength developed Aged at temperature indicated and tested 22 C with time on zinc dichromate steel pins and collars using Activator 7471 and 7649 and tested according to ISO 200 10123. 100 150 75 100 50 50 Activator 7649 25 No activator 0 0 1000 2000 3000 4000 5000 Exposure Time, hours 0 1min 5min10min 30min 1h 3h 6h 24h 72h Cure Time Chemical/Solvent Resistance Aged under conditions indicated and tested 22 C. TYPICAL PROPERTIES OF CURED MATERIAL % of initial strength Physical Properties : -6 CoefficientofThermal Expansion, 8010 Environment C 100h 500h 1000h -1 ISO11359-2,K Motor oil(MIL-L-46152) 125 100 100 100 CoefficientofThermal Conductivity , ISO8302, 0.1 Unleaded gasoline 22 100 100 100 W/(mK) Brake fluid 22 80 75 75 Specific Heat, kJ/(kgK) 0.3 Elongation ,at break ,ISO37,% <2 Water/glycol 50/50 87 100 90 80 Ethanol 22 95 95 95 Acetone 22 80 80 80 TYPICAL PERFORMANCE OF CURED MATERIAL GENERAL INFORMATION Adhesive Properties This product is not recommended for use in pure oxygen and/or After 24 hours 22 C oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials. Compressive Shear Strength, ISO 10123: LMS Steel pins and collars N/mm 17.2 For safe handling information on this product, consult the Safety (psi) (2,490) Data Sheet (SDS). Where aqueous washing systems are used to clean the surfaces TYPICAL ENVIRONMENTAL RESISTANCE beforebonding, it is important to check forcompatibility ofthe washing solution with the adhesive. Insome cases these aqueous washes can Cured for 1 week 22 C affect the cure and performance ofthe adhesive. Compressive Shear Strength, ISO 10123: Steel pins and collars This product is not normally recommended foruse on plastics (particularly thermoplastic materials where stress cracking of the plastic could result). Users are recommended to confirm compatibility ofthe product with such substrates. Directions for use: Henkel Americas Henkel Europe Henkel Asia Pacific +860.571.5100 +49.89.320800.1800 +86.21.2891.8859 For the most direct access to local sales and technical support visit: www.henkel.com/industrial 150 C 120 C 40 C 22 C % of Full Strength on Steel % of Full Strength on Steel % Initial Strength 22 C % Strength 22 C