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Master Bond adhesives

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Gougeon Brothers West System® G/flex® Epoxies
Categories: Polymer; Thermoset; Epoxy

Material Notes: G/flex Epoxies are toughened, resilient two-part epoxies engineered for a superior grip to metals, plastics, glass, masonry, fiberglass, and wet and difficult-to-bond woods. G/flex Epoxies are available in two consistencies. G/flex 650 Epoxy is a liquid epoxy with a honey-like consistency. G/flex 655 Epoxy Adhesive is pre-thickened with a consistency similar to gel toothpaste. Both have an easy-to-use 1:1 mix ratio. G/flex provides a relatively long open working time, yet it cures quickly and can be used in cool temperatures. G/flex Epoxies are toughened to make them resilient and impact resistant, giving them the ability to make structural bonds that can absorb the stresses of expansion, contraction, shock, and vibration. With a modulus of elasticity of 150,000 psi, G/flex is more flexible and can deflect further before breaking than WEST SYSTEM 105/205, while being much stiffer than typical adhesive sealants. G/flex adheres tenaciously to difficult-to-glue hardwoods, both tropical and domestic varieties. It can be used to bond metals, plastics, glass, masonry, and fiberglass. G/flex is ideal for repairs to aluminum boats and polyethylene and ABS canoes and kayaks. It can also be used to wet out and bond fiberglass tapes and fabrics. G/flex 650 can be modified with WEST SYSTEM fillers and additives and added to other WEST SYSTEM epoxies to improve their toughness and flexibility.

Information provided by Gougeon Brothers, Inc.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.11 g/cc
Viscosity 15000 cPG/flex 650; ASTM D-2393
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 75ASTM D-2240
Tensile Strength 3440 psiASTM D638
Elongation at Break 32.7 %ASTM D638
Tensile Modulus 144000 psiASTM D-638
Flexural Strength 5190 psiASTM D-790
Flexural Modulus 156000 psiASTM D-790
Compressive Yield Strength 5270 psiASTM D-695
 
Thermal PropertiesOriginal ValueComments
Deflection Temperature at 0.46 MPa (66 psi) 127 °FASTM D-648
Glass Transition Temp, Tg 138 °FOnset
 154 °FUltimate
 
Processing PropertiesOriginal ValueComments
Cure Time 3.00 - 4.00 hourInitial cure
 7.00 - 10.0 hourWorkable cure
Pot Life 45.0 min100 g
Working Life 75.0 min
 
Descriptive Properties
Mix ratio1.2:1'weight
 1:1volume

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PGOUGW900 / 290744

Rulon Bearings

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