TechnicalData Sheet LOCTITE 572 May -2004 PRODUCT DESCRIPTION 100 LOCTITE 572provides the following product characteristics: Technology Acrylic 75 ChemicalType Dimethacrylate Ester LMS Appearance (uncured) White to off-white paste Components One component -requires no mixing 50 Viscosity High, thixotropic Cure Anaerobic 0.15mm 25 Secondary Cure Activator Application Thread Sealing Strength Medium 0 1min 5min10min 30min1h 3h 6h 24h 72h Cure Time LOCTITE 572 is designedfor the lockingand sealing of metal pipes and fittings. The product cures when confined inthe Cure Speed vs. Temperature absence of air between close fittingmetal surfaces and The rate of cure will depend on the temperature . The graph prevents loosening and leakagefrom shock and vibration .The below shows the breakaway strength developed with time at thixotropic nature of LOCTITE 572 reduces the migration of differenttemperatures on M10 steel nuts and bolts and tested according to ISO 10964. liquid product after application to the substrate . TYPICAL PROPERTIES OF UNCURED MATERIAL 100 SpecificGravity 25 C 1.25 Flash Point -SeeMSDS 75 Viscosity, Brookfield -RVT , 25 C, mPas (cP) : LMS Spindle 6,speed 2.50rpm 28,800 to 77,000 LMS Spindle 6,speed 20 rpm 14,400 to 28,600 50 TYPICAL CURING PERFORMANCE 25 Cure Speed vs. Substrate The rate of cure will depend on the substrate used .The graph below shows the breakaway strength developed with time on 0 M10 steel nuts and bolts compared to differentmaterials and 1min 5min10min 30min1h 3h 6h 24h 72h Cure Time tested according to ISO 10964. 100 Cure Speed vs. Activator Where cure speed is unacceptably long, or large gaps are present, applying activator to the surface will improve cure 75 speed .The graph below shows breakaway strength developed with time using Activator 7471 and 7649 on M10 zinc dichromate steel nuts and bolts and tested according to ISO 50 10964. 100 25 75 0 1min 5min10min 30min1h 3h 6h 24h 72h Cure Time 50 Cure Speed vs. Bond Gap The rate of cure will depend on the bondline gap . Gaps in 25 threaded fasteners depends on thread type, quality and size . The following graph shows shear strength developed with time on steel pins and collars at differentcontrolled gaps and tested 0 according to ISO 10123. 1min 5min10min 30min1h 3h 6h 24h 72h Cure Time Activator 7471 Brass Activator 7649 Zinc Dichromate No Activator 40C 0.05mm 22C Steel % of Full Strength on Steel % of Full Strength on Steel % of Full Strength on Steel % of Full Strength on Steel150C 120C TDS LOCTITE 572, May -2004 TYPICAL PROPERTIES OF CURED MATERIAL Heat Aging Physical Properties : Aged at temperature indicatedand tested at 22C -1 -6 Coefficientof Thermal Expansion ,ASTM D 696,K 8010 100 Coefficientof Thermal Conductivity, ASTM C 177, 0.10 W/(mK) SpecificHeat, kJ/(kgK) 0.30 75 TYPICAL PERFORMANCE OF CURED MATERIAL 50 Adhesive Properties After 24 hours 22 C 25 Breakaway Torque, ISO 10964: M10 steel nuts and bolts Nm 7 (lb.in.) (60) 0 0 1000 2000 3000 4000 5000 Prevail Torque, ISO 10964: Hours M10 steel nuts and bolts Nm 3 (lb.in.) (30) Chemical/Solvent Resistance Breakloose Torque, ISO 10964,Pre-torqued to 5 Nm : Aged under conditions indicatedand tested at 22C. M10 steel nuts and bolts Nm 20 % of initial strength (lb.in.) (180) Environment C 100hr 500hr 1000hr Max. Prevail Torque, ISO 10964,Pre-torqued to 5 Nm : Motor Oil 125 75 70 70 M10 steel nuts and bolts Nm 20 LeadedPetrol 22 95 95 95 (lb.in.) (180) Brake fluid 22 100 100 100 Compressive Shear Strength, ISO 10123: Water Glycol 50/50 87 90 80 55 LMS Steel pins and collars N/mm 0.50 Ethanol 22 90 90 90 (psi) (70) Acetone 22 85 85 75 TYPICAL ENVIRONMENTAL RESISTANCE GENERAL INFORMATION Cured for 1 week 22 C This product is not recommended for use in pure oxygen Breakloose Torque, ISO 10964,Pre-torqued to 5 Nm : and/or oxygen rich systems and should not be selected as M10 zincphosphate steel nuts and bolts a sealant for chlorine or other strong oxidizing materials. For safe handling information on this product, consult the Hot Strength Material Safety Data Sheet (MSDS). Tested at temperature 100 Where aqueous washing systems are used to clean the surfaces before bonding, it is important to check for compatibility of the washing solution with the adhesive. In 75 some cases these aqueous washes can affectthe cure and performance of the adhesive. 50 This product is not normally recommended for use on plastics (particularly thermoplastic materials where stress crackingof the plastic could result). Users are recommended to confirm 25 compatibility of the product with such substrates. 0 Directions for use 0 50 100 150 For Assembly Temperature, C 1. For best results, clean all surfaces (external and internal) with a Loctite cleaningsolvent and allow to dry . 2. Ifthe material is an inactivemetal or the cure speed is to slow, spray with Activator 7471 or 7649 and allow to dry . 3. Apply a 360 bead of product to the leadingthreads of the male fitting,leaving the first thread free. Force the material into the threads to thouroughly fillthe voids. For bigger threads and voids, adjust product amount accordingly and apply a 360 bead of product on the femalethreads also . 4. Using accepted trade practices, assemble and wrench tighten fittingsuntil proper alignment is obtained . HenkelLoctite Americas HenkelLoctite Europe HenkelLoctite Asia Pacific +860.571.5100 +49.89.9268.0 +81.45.758.1810 For the most direct access to local sales and technical support visit: www.loctite.com % RT Strength % Initial Strength at RT
