MASTER BOND TWO COMPONENT SERIES APPLICATION SELECTOR GUIDE

Selected Two Component Epoxy Adhesives, Sealants, Coatings, Encapsulants & Potting Compounds

Partial Listing Only –— Other Grades Available


Master Bond Grade

Mix Ratio
by weight


Color Code

Mixed Viscosity
RT, cps

Set-Up Time
Minutes, RT

Cure Schedule
Temp/Time, °F

Service Temp Range, °F


Applications

EP21

100/100

“A” gray
“B” tan

50,000-60,000

60-90

24-48 hrs @ RT
2 hrs @ 200°F

-60 to +250°F

High performance general purpose adhesive, sealant and coating.  Can alter mix ratio to vary toughness and flexibility.

EP21AO

100/100

“A” gray
“B” white

light paste

45-60

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Thermally conductive version of EP21.  Used primarily for bonding and sealing.

EP21AOLV

100/100

“A” gray
“B” white

40,000-50,000

75-90

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Lower viscosity version of EP21AO.  Easy to use, thermally conductive potting material/encapsulant.

EP21AN

100/100

“A” gray
“B” white

light paste

60-90

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Higher thermally conductive version of EP21AO,  Thermal conductivity at 75°F >22 BTU•in/ft² •hr•°F.

EP21AR

100/50

“A” clear
“B” amber

10,000-15,000

30-35

24-48 hrs @ RT
2-2½ hrs @ 200°F

-60 to +275°F

Superb resistance to inorganic and many organic acids.  For bonding, sealing and coating.

EP21BAS

100/100

“A” off white
“B” off white

>175,000

60-90

48-60 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Radio opaque adhesive/sealant/coating for medical and medical electronic applications.

EP21FL

100/25

“A” amber
“B” amber

3,000-4,000

120-180

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Flexible version of EP21.  Superior thermal cyclability, shock and impact resistance.  Excellent adhesive/sealant.

EP21FRLVSP

100/100

“A” red
“B” white

25,000-30,000

30-60

24-48 hrs @ RT
2 hrs @ 200F

-60 to +250°F

Flame retardant. UL94 V-0 certified system.  For potting and bonding.

EP21HT

100/100

“A” clear
“B” amber

50,000-60,000

50-70

24-48 hrs @ RT
2 hrs @ 200°F

-60 to +400°F

High temperature resistant version of EP21 with excellent chemical resistant properties. Convenient handling.

EP21LSCL

100/60

“A” clear
“B” clear

1,000-1,500

30-35

24 hrs @ RT
1-2 hr @ 200°F

-65 to +250°F

Transparent, non-yellowing version of EP21 for bonding, sealing and coating.  For optical and display applications.

EP21LV

100/100

“A” clear
“B” amber

6,000-8,000

60-90

24-48 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Lower viscosity than EP21.  Food grade & USP Class VI certified.  For bonding, sealing, coating & encapsulation.

EP21ND

100/100

“A” gray
“B” tan

paste

45-60

24-48 hrs @ RT
2 hrs @ 200°F

-60 to +250°F

Non drip version of EP21.  Suitable for vertical applications.  Excellent adhesive/sealant.

EP21ROK

100/100

“A” gray
“B” light tan

moderate
paste

90-120

24-48 hrs @ RT

-60 to +250°F

Durable, tough, “no-skid” flooring with high chemical resistance.

EP21TCHT-1

100/66

“A” off white
“B” off white

light
paste

30-35

18-24 hrs @ RT
1-2 hrs @ 200°F

4°K to +400°F

NASA approved low outgassing; thermally conductive, for bonding and sealing.  Cryogenically serviceable.

EP21TDC

100/100

“A” clear
“B” amber

40,000-50,000

60-75

24-48 hrs @ RT
2 hrs @ 200°F

-100 to +250°F

Excellent general purpose adhesive/sealant.  Convenient handling.  Good impact & shock resistance.

EP21TDC-2

33/100

“A” clear
“B” amber

70,000-80,000

75-90

72 hrs @ RT
2-3 hrs @ 200°F

4°K to +250°F

Highly flexible with exceptional thermal and mechanical shock resistance.  Suitable for cryogenic applications.

EP21TDC-2AO

33/100

“A” white
“B” off white

paste

90-120

48-72 hrs @ RT
3 hrs @ 200°F

-100 to +250°F

Thermally conductive version of EP21TDC-2.  Particularly well suited for bonding dissimilar substrates.

EP21TDC-7

100/700

“A” clear
“B” amber

120,000-140,000

120-150

48-96 hrs @ RT
3-4 hrs @ 200°F

-100 to +250°F

Ultra high flexibility.  Exceptional for bonding most rubber materials (natural, SBR, nitrile, etc.).

EP21TDCHT

100/100

“A” clear
“B” amber

100,000-120,000

60-90

48 hrs @ RT
2-3 hrs @ 200°F

-100 to +350°F

High temperature resistant general purpose system.  Excellent adhesion to a wide variety of substrates.

EP21TDCS

100/100

“A” silver
“B” silver

smooth paste

30-40

24-36 hrs @ RT
1-2 hrs @ 200°F

4°K to +250°F

High performance, silver filled, toughened system with excellent bond strength and cryogenic applicability.

EP21TPND

100/100

“A” black
“B” tan

thixotropic
paste

30-45

48-60 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Polysulfide modified version of EP21.  Fuel and oil resistant sealant.

EP21TP-2

100/100

“A” clear
“B” amber

1,500-2,000

30-45

48-60 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Low viscosity version of EP21TPND.  Ideal for potting and encapsulating.

EP22

100/100

“A” gray
“B” gray

paste

60-90

10 hrs @ RT
2 hrs @ 200°F

-60 to +250°F

Aluminum filled epoxy featuring exceptional dimensional stability and machinability.

EP24

100/100

“A” gray
“B” tan

50,000-60,000

10-20

12 hrs @ RT
30-45 min @ 200°F

-60 to +250°F

Faster curing version of EP21.  Capable of curing at below 40°F.  Ideal for field applications.

EP27

100/50

“A” clear
“B” amber

2,100-2,500

25-30

12-24 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Superb coating/liner.  Will cure below 40°F.  Outstanding chemical resistance. 

EP29LP

100/50

“A” clear
“B” clear

800

> 6 hrs

5-7 days @ RT
4-6 hrs @ 200°F

-60 to +250°F

Transparent.  Low viscosity, low exotherm, long working life system for bonding, casting and filament winding. 

EP29LPSP

100/65

“A” clear
“B” translucent

700

> 6 hrs

5-7 days @ RT
8-12 hrs @ 150°F

4°K to +250°F

Cryogenic version of EP29LP.  Can withstand cryogenic shock.  NASA low outgassing approved.  Transparent.

EP30

100/25

“A” clear
“B” clear

400-500

25-30

18-24 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Low viscosity transparent adhesive, sealant, coating and potting epoxy.  Exceptionally low shrinkage.

EP30MED

100/25

“A” clear
“B” clear

1,600-1,800

30-40

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Medical version of EP30.  USP Class VI certified.  Also meets food grade specifications. Transparent.

EP30-1

100/25

“A” clear
“B” clear

1,500-1,600

30-35

24-48 hrs @ RT
2 hrs @ 200°F

-60 to +250°F

Lower viscosity transparent system for fiber optic bonding, coating, potting and encapsulation.

EP30-2 

100/10

“A” clear
“B” clear

1,800-2,000

20-25

24 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Clear system for optical and fiber optic bonding & sealing.  Superb chemical resistance.  Transparent.

EP30-3

100/33

“A” clear
“B” clear

5,000-6,000

12-18 hrs

30-45 min @ 160°F
plus 2-3 hrs @ 300°F

-60 to +435°F

Transparent, high temperature, high chemical resistant version of EP30.  Requires heat cure.

EP30-4

100/50

“A” clear
“B” clear

2,000

4-10

8-12 hrs @ RT

-60 to +250°F

Very fast curing transparent epoxy system.  Superior non-yellowing properties.

EP30AO

100/10

“A” off white
“B” clear

15,000-20,000

30-40

24-36 hrs @ RT
1-2 hr @ 200°F

-60 to +250°F

Low viscosity, thermally conductive system.  Ideal for potting and encapsulation.  Good dimensional stability.

EP30AN

100/10

“A” gray
“B” clear

20,000-30,000

30-40

24-36 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Higher thermally conductive version of EP30AO. Special NASA low outgassing version also available (EP30AN-1).

EP30D-7

100/15

“A” black
“B”  yellow

40,000-50,000

45-50

36-48 hrs @ RT
2-2½ hrs @ 200°F

-60 to +250°F

Highly flexible, abrasion resistant adhesive, sealant, coating and encapsulant.

EP30D-10

100/5

“A” clear
“B” clear

>120,000

3-4 hrs

3-4 days @ RT
3-4 hrs @ 200°F

-60 to +250°F

High viscosity.  Very flexible with high elongation.  Transparent.  For bonding and sealing. 

EP30DP

100/10

“A” light amber
“B” clear

3,000-4,000

60-90

48 hrs @ RT
2-3 hrs @ 200°F

4°K to +250°F

Toughened sealant, potting and encapsulating material.  Allows for repairability.  Cryogenically servicable.

EP30FL

100/25

“A” amber
“B” clear

2,000-3,000

25-30

24 hrs @ RT
1-2 hrs @ 200°F

4°K to +250°F

Low viscosity, flexible, for high performance potting, encapsulating and sealing.  Cryogenically serviceable.

EP30HT

100/25

“A” clear
“B” clear

35,000-45,000

25-35

24 hrs @ RT
1-2 hrs @ 200°F

-60 to +400°F

High temperature resistant version of EP30, transparent, system for bonding, sealing, coating and casting.

EP30LTE

100/10

“A” black
“B” clear

15,000-20,000

30-40

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Exceptionally low coefficient of expansion system with very low shrinkage & high dimensional stability.

EP30M3LV

100/50

“A” black
“B” brown

2,000-3,000

130-150

48-72 hrs @ RT
3-4 hrs @ 200°F

-60 to +250°F

For potting, casting and encapsulation.  Low exotherm.  Long working life.  Excellent for capacitors.

EP30R

100/25

“A” yellow
“B” yellow

paste

30-35

24 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Fiber reinforced, high performance structural epoxy for bonding.  Rigid with high impact resistance.

EP31

100/33

“A” clear
“B” clear

2,000-3,000

30-40

24-36 hrs @ RT
2 hrs @ 200°F

-60 to +250°F

Ultra high strength adhesive in both tensile and peel modes.  Lap shear over 4,500 psi.

EP33

100/70

“A” gray
“B” amber

50,000-60,000

50-60

24-48 hrs @ RT
1-2 hrs @ 200°F

-60 to +450°F

High temperature resistant adhesive/sealant.  Can resist high radiation levels.  Good physical strength properties.

EP34

100/70

“A” black
“B” amber

70,000-80,000

50-60

24-48 hrs @ RT
1-2 hrs @ 200°F

-60 to +450°F

Mineral filled version of EP33.  Superior electrical insulation properties.

EP34CA

100/50

“A” black
“B” brown

5,000-6,000

12-24 hrs

1 hr @ 150°F plus
2-3 hrs @ 300°F

-60 to +500°F

Ultra high temperature resistant lower viscosity system for filament winding, potting & bonding.  Requires heat cure.

EP35

100/70

“A” gray
“B” amber

70,000-80,000

50-60

24-48 hrs @ RT
1-2 hrs @ 200°F

-60 to +450°F

Specially filled version of EP33.  Enhanced dimensional stability.

EP37-3

100/50

“A” clear
“B” clear

300-400

>6 hrs

5-7 days @ RT
4-6 hrs @ 200°F

-80 to +250°F

Low viscosity, low exotherm, transparent, slightly flexible.  Exceptionally long working life.  For bonding and potting.

EP37-3FLF

100/100

“A” clear
“B” clear

1,500-1,800

120-150

48-72 hrs @ RT
3 hrs @ 200°F

4°K to +250°F

Highly flexible version of EP37-3.  Transparent.  For bonding, sealing & potting.  Cryogenically serviceable.

EP37-3FLFAO

100/100

“A” white
“B” white

18,000-22,000

3 hrs

4-5 days @ RT
4-6 hrs @ 200°F

4°K to +250°F

Thermally conductive version of EP37-3FLF.  For potting & encapsulation. Repairable.  Cryogenically serviceable.

EP39-2

100/50

“A” clear
“B” clear

2,000-3,000

30-35

4-6 hrs @ RT

-60 to +300°F

Low viscosity.  Fast curing.  Used often as an optical adhesive/sealant and for chemically resistant coatings.

EP39M

100/75

“A” black
“B” clear

3,000-4,000

35-40

24 hrs @ RT
1 hr @ 200°F

-60 to +350°F

Heat resistant adhesive/coating and encapsulant for capacitors and other electronic components.

EP41S-1

100/30

“A” clear
“B” amber

6,000-7,000

25-30

24-36 hrs @ RT
1-2 hrs @ 200°F

-60 to +300°F

Special high performance epoxy with outstanding resistance to organic solvents, alcohols and fuels.

EP41S-4

100/25

“A” black
“B” clear

3,000-4,000

15-20

24 hrs @ RT
1-2 hrs @ 200°F

-60 to +300°F

Chemically resistant to chlorinated solvents and acids.  For coatings & high security potting applications.

EP42HT

100/40

“A” clear
“B” amber

8,000-10,000

35-45

24-36 hrs @ RT
2-3 hrs @ 200°F

-60 to +435°F

USP Class VI.  Resists repeated chemical, ETO, radiation and steam sterilization.  For bonding,  potting & sealing.

EP42LV

100/40

“A” clear
“B” amber

2,000-2,300

25-35

24-36 hrs @ RT
2-3 hrs @ 200°F

-60 to +300°F

Low viscosity, highly chemical resistant coating, casting and bonding system.

EP45HT

100/30

“A” clear
“B” brown

40,000-50,000

12-24 hrs

1 hr @ 150°F plus
2-3 hrs @ 300°F

-80 to +500°F

High temperature and chemically resistant structural adhesive/sealant.  MMM-A-132 type III.  Requires heat cure.

EP50

100/100

“A” clear
“B” clear yellow

8,000-10,000

45 sec

5-15 min @ RT

-60 to +250°F

Super high-speed curing adhesive for structural  bonding.

EP50-1.5

100/100

“A” clear
“B” clear yellow

8,000-10,000

90-120 sec

2-3 hrs @ RT

4°K to +250°F

Very fast setting, cryogenic adhesive/sealant.  Also available in thermally conductive version (EP50-1.5AO). 

EP51

100/100

“A” clear
“B” tan

10,000-12,000

5 min

4-6 hrs @ RT

4°K to +250°F

Fast curing, general purpose  “5 minute” epoxy.  Excellent long term durability.  Cryogenically serviceable.

EP51HT

100/100

“A” clear
“B” tan

60,000-70,000

5 min

4-6 hrs @ RT

-60 to +350°F

Higher heat resistant (350°F) version of EP51 epoxy resin system.

EP51M

100/100

“A” amber
“B” tan

8,000-9,000

3 min

3-3½ hrs @ RT

4°K to +250°F

“3 minute” gel version of EP51 epoxy resin system.  Cryogenically serviceable.

EP62-1

100/5 or
100/10

“A” clear
“B” tan

8,000-10,000

8-10 hrs

4-6 hrs @ 150°F or
2-3 hrs @ 200°F

-60 to +300°F

High temperature, high chemical resistant adhesive/sealant.  Long working life.  Requires cure at 150-200°F.

EP65HT-1

100/10

“A” clear
“B” dark purple

60,000-70,000

3-5

20-30 min @ RT

-60 to +400°F

Ultra-fast curing adhesive.  Resists high temperatures, high bond strength, NASA  low outgassing approved.

EP72M3

100/100

“A” black
“B” white

100,000-120,000

90-120

48-72 hrs @ RT
2-3 hrs @ 200°F

-60 to +275°F

Flexibilized system with exceptionally high impact resistance.  High lap shear & peel strength.

EP75-1

100/15

“A” dk gray/black
“B” clear

paste

60

24-48 hrs @ RT
1-2 hrs @ 200°F

-60 to +250°F

Electrically conductive (graphite filled) epoxy adhesive/sealant.

EP76M

100/100

“A” gray
“B” gray

paste

60

24-48 hrs @ RT
2-3 hrs @ 200°F

-60 to +250°F

Electrically conductive (nickel filled) epoxy adhesive/sealant.  Convenient mix ratio.

EP77M-F

100/100

“A” silver
“B” silver

smooth paste

5-10

4-8 hrs @ RT

-60 to +250°F

Electrically conductive, silver filled epoxy adhesive/sealant.  Convenient mix.  Very fast cure time.

EP110F6

50/100

“A” clear
“B” amber

15,000-20,000

12-24 hrs @ RT

60-90 min @ 150°F
plus  6-8 hrs @ 300°F

-55 to +155°C

For sealing and potting.  Superior thermal shock resistance.  Meets MIL-I-16923C.  Requires heat cure.

EP112

100/80

“A” clear
“B” clear

300-400

>24 hrs

2-3 hrs @ 200°F plus 6-10 hrs @ 300°F

-60 to 500°F

Extraordinary electrical insulation properties.  Clear, ultra-thin sealant/encapsulant..  Non-yellowing.  Requires heat cure.

EP121CL

100/80

“A” clear
“B” clear

2,000-3,000

>24 hrs

3 hrs @ 200°F
plus 8-10 hrs@300°F

-60 to 500°F

Low viscosity, 500°F potting/impregnant.  Exceptional electrical insulation properties.  Requires heat cure.

EP121AO

100/80

“A”white
“B” white

35,000-45,000

12-24 hrs

3 hrs @ 200°F plus 8-10 hrs @ 300°F

-60 to 500°F

Thermally conductive version of EP121CL.  For high temperature potting & encapsulation.   Requires heat cure.

EP125

100/50

“A” gray
“B” yellow powder

paste

not applicable

1 hr @ 180°F plus
1 hr @ 300°F plus
2 hrs @ 400°F

-60 to 600°F

Super high temperature resistant system capable of 600°F temperature service. Requires heat cure.

Black Magic HT

100/100

“A” black
“B” black

paste

60

24-48 hrs @ RT

-60 to +400°F

For durable, high performance, abrasion resistant coatings, liners and sealant.

SuperGel #7

100/100

“A” clear
“B” clear

500

> 3 hrs

48-72 hrs @ RT
3 hrs @ 200°F

-60 to +200°F

Soft, resilient, transparent epoxy gel for encapsulation of electronic components and circuitry.

Supreme 11

100/100

“A” gray
“B” tan

30,000-40,000

40-50

18-24 hrs @ RT
30-45 min @ 200°F

-100 to +275°F

High peel strength, high performance epoxy adhesive system.  Excellent thermal shock resistance.

Supreme 11AOHT

100/100

“A” gray
“B” white

paste

25-50

24-36 hrs @ RT

1 hr @ 200°F

-100 to +400°F

Thermally conductive version of Supreme 11HT.
Convenient 1/1 ratio, good electrical insulation properties.

Supreme 11HT

100/100

“A” gray
“B” tan

125,000-135,000

20-30

18-24 hrs @ RT
30-45 min @ 200°F

-100 to +400°F

Heat resistant version of Supreme 11.  Good mechanical and physical strength properties.

Supreme 45HT

100/30

“A” tan
“B” brown

65,000-75,000

12-24 hrs

1 hr @ 150°F plus
2-3 hrs @ 300°F

-80 to +450°F

Toughened version of EP45HT.  Well suited for bonding dissimilar substrates.  Superb sealant.  Requires heat cure.

Supreme 45HTQ

100/30

“A” tan
“B” brown

100,000-120,000

12-24 hrs

1 hr @ 150°F plus 3-4 hrs @ 300°F

-80 to +450°F

Mineral filled version of Supreme 45HT.  Enhanced dimensional stability. Requires heat cure.

SteelMaster 43HT

100/20

“A” dark gray
“B” tan

thixotropic
paste

20-30

24 hrs @ RT
1-2 hrs @ 200°F

-60 to +400°F

Machinable, stainless steel filled, for repairing metallic parts & bonding carbide to steel.  Ultra high compressive strength.

Master Bond Inc.

Adhesives, Sealants & Coatings • 154 Hobart Street • Hackensack, N.J.  07601 • Tel: 201-343-8983 • Fax: 201-343-2132

Notice:  Master Bond believes the information on the data sheets is reliable and accurate as is technical advice provided by the company.  Master Bond makes no warranties (expressed or implied) regarding the accuracy of the information and assumes no liability regarding the handling and usage of this product.                                                                                                                                                     D029