HAPCOAT 3720      ELASTOMERIC     ABRASION RESISTANT      SURFACE COAT

COMPATIBLE WITH PLASTER       MACHINABLE      WHITE COLOR      EASILY HANDLED

A two-component, room temperature curing, medium to high thixotropic, readily machinable, surface coat developed especially for use with plaster as a backup plastic.  

Being thixotropic, HAPCOAT 3720 is ideally suited for use on vertical or sloping surfaces where flow or drain-off cannot be tolerated.

• Easy to sand and work, and should be used on those pattern-making applications where additional machining is required.

• Plastic surface for plaster castings.

• Inexpensive, fast castings, used for molds, metals, or patterns

Advantages:

• May be applied & wet plaster poured as a backup in a wet state. The two systems will bond, forming a plastic faced/plaster backed system. 

• This surface coat has no abrasive filler in it, and is easily worked by all wood cutting tools

• The white color of this face coat is ideally suited for scribing with marking inks to outline pattern changes, etc.

• Reproduces the finest surface detail and texture.   

Typical Properties:

Hardness

60 D

Viscosity @ 25° C

Medium Thixotropic

Ultimate Compressive Strength

14,080 psi

Linear Shrinkage inch/inch

0.0005

Specific Gravity

1.4

Izod impact (ft/lbs/inch of notch)

0.37

Directions For Use

HAPCOAT 3721/3721 LV    WHITE     MACHINABLE    SURFACE COAT

MACHINABLE     WHITE COLOR      EASILY HANDLED

A two-component, room temperature curing, medium to high thixotropic, readily machinable, surface coat developed especially for precise duplication of surface details. 

• Being thixotropic, HAPCOAT 3721 is ideally suited for use on vertical or sloping surfaces where flow or drain-off cannot be tolerated. 

• Easy to sand and work, and should be used on those pattern-making applications where additional machining is required.

• HPCOAT 3721 LV is a lower viscosity (medium thixotropic) version of HAPCOAT 3721. 
  Both are creamy consistency and will hang on vertical surfaces.

• HAPCOAT 3721 will build up faster than HAPCOAT 3721 LV.

 Advantages:

• This surface coat has no abrasive filler in it, and is easily worked by all wood cutting tools

• The white color of this face coat is ideally suited for scribing with marking inks to outline pattern changes, etc.

• Reproduces the finest surface detail and texture

Typical Properties:

HAPCOAT 3726   ALUMINUM FILLED   HIGH TEMPERATURE   GEL COAT

FAST "TACK-UP" TIME      HIGH HEAT DISTORTION     MACHINABLE     LOW SHRINKAGE      EASILY HANDLED      VERSATILE

HAPCOAT 3726 is a high heat resistant, thixotropic, gel coat that is specifically designed to reproduce surface details exactly and eliminate print through.  When HAPCOAT 3726 is used with HAPCURE 7 curing agent, it is ideally suited for molds filled with aluminum conductites or sand, or backed with fiberglass cloth. This is due to its fast "tack-up" time which eliminates any print through.

• Formulated to withstand 350^°F continuous service, & intermittent service to 400^°F

• Being thixotropic, HAPCOAT 3726 applies easily with a brush, and will not sag when applied to a vertical surface

• Easily machined and can be drilled, tapped, or milled with conventional tools

• When used with HAPCURE 7, HAPCOAT 3726 reaches "tacked-up" (bubble gum) state in approximately 30-45 minutes.

• Short-term exposure to 400^°F and continuous service to 350^°F is possible with this system.

• Reproduces the finest surface detail and texture. 

• There is almost no shrinkage during cure with HAPCOAT 3726.

• May be used with a variety of curing agents to accommodate a wide range of application requirements.

HAPCOAT 3726 Applicatiions:

These high heat transfer and high heat distortion properties make HAPCOAT 3726 especially suitable for:

• Sample and production molds for foam molding

• Slush molding

• Injection molding

• Blow molds

• Autoclave molds

• Molds for low melting alloys for wax

• Molds for thermosets, such as epoxies, polyesters, silicones, and urethanes

• High temperature vacuum and pressure forming molds

• Hot press dies

• Foam molds

Typical Properties:

HAPCOAT 3727   STEEL FILLED   HIGH STRENGTH   EASILY APPLIED   SURFACE COAT

CLOSE DIMENSIONAL TOLERANCE     WEAR/ HEAT RESISTANT     CHEMICAL RESISTANT   EASY TO USE    MACHINABLE

• A hard, steel filled, high strength, wear resistant, thermally conductive, brushable tool and mold surface coat.

• Used as a high performance mold or tool surfacing material and a mold or tool patching material.  

• Available in easy to use, two part pre-measured kits, which mix to a brushable, creamy consistency.

• Reproduces exact surface detail and produces a hard, durable surface, that is both heat and chemical resistant

Advantages:

• Has a very low shrinkage characteristic, which enables exact surface detail and dimension reproduction.

• Used where moderate wear resistance is required.

• Provides continuous high temperature service up to 350° F. 

• Highly resistant to mold release agents and mold cleaners.

• Creamy, and spreads easily by brushing over a model or pattern.

• Can be readily machined, drilled, tapped, or milled with conventional metal working tools.

• Can also be used for changes and repairs in tooling.

Applications:

• Foundry Patterns

• Tracing masters

• Molds and fixtures where high performance and exact detailing is required.

Typical Properties:

HAPCOAT 562-564 ELASTOMERIC, ABRASION RESISTANT, SURFACE COAT

FAST "TACK-UP" TIME       EXCELLENT     IMPACT RESISTANCE     EASILY HANDLED     MACHINABLE      VERSATILE

A soft hardness (shore A 60), elastomeric, abrasion resistant, thixotropic, surface coat that is specifically designed to reproduce surface details exactly.

• Formulated to withstand high wear continuous service.

• Being thixotropic, HAPCOAT 562-564 applies easily with a brush

• Will not sag when applied to a vertical surface. 

• Easily machined and can be drilled, tapped, or milled with conventional tools. 

Advantages:

• When parts A & B are mixed, HAPCOAT 562-564 reaches a "tacked-up" (bubble gum) state in approximately 30-45 minutes.

• Continuous exposure to a high wear environment is possible with this system.

• Being elastomeric, the surface is resistant to dents and cracks.

• Being thixotropic, HAPCOAT 562-564 will not sag when applied to a vertical surface and allows the user a good, even coat.

• Parts are easily machined with regular tools.

• May be drilled, tapped, sanded, polished, and turned in a lathe.

• May be used with a variety of curing agents to accommodate a wide range of application requirements.

Applications:

• Properties such as Impact Resistance and Wear Resistance make HAPCOAT 562-564 especially suitable for sample and production tools, patterns and fixtures.

•  Ideally suited for foundry applications, drilling fixtures, molding fixtures, sand blasting fixtures and checking gauges.

• Excellent for electrical insulation applications requiring non or low sag materials.

• Exerts low stress on components and is shock resistant.

Typical Properties:

Hapcoat 597-599  ELASTOMERIC    ABRASION RESISTANT    SURFACE COAT

FAST "TACK-UP" TIME     IMPACT RESISTANCE     EASILY HANDLED     MACHINABLE VERSATILE

A medium hardness (shore A 90-95), elastomeric, abrasion resistant, thixotropic, surface coat that is specifically designed to reproduce surface details exactly.

• Formulated to withstand high wear continuous service

• Being thixotropic, HAPCOAT 597 applies easily with a brush, and will not sag when applied to a vertical surface.

• Easily machined and can be drilled, tapped, or milled with conventional tools

Advantages:

• When parts A & B are mixed, HAPCOAT 597 reaches a "tacked-up" (bubble gum) state in approximately 30-45 minutes.

• Continuous exposure to a high wear environment is possible with this system.

• Being elastomeric, the surface is resistant to dents and cracks.

• Being thixotropic, HAPCOAT 597 will not sag when applied to a vertical surface and allows the user a good, even coat.

• Parts are easily machined with regular tools.

• May be drilled, tapped, sanded, polished, and turned in a lathe.

• May can be used with a variety of curing agents to accommodate a wide range of application requirements.

Applications:

• Ideally suited for foundry applications

• Sample and production tools

• Patterns and fixtures.

• Drilling fixtures

• Molding fixtures

• Sand blasting fixtures

• Checking gages

Typical Properties:

Hapcoat 667-669   ELASTOMERIC      ABRASION RESISTANT      SURFACE COAT

FAST "TACK-UP" TIME     EXCELLENT  IMPACT RESISTANCE    EASILY HANDLED    MACHINABLE     VERSATILE

• A hard(shore D 60-65), elastomeric, abrasion resistant, thixotropic, surface coat that is specifically designed to reproduce surface details exactly.

• Formulated to withstand high wear continuous service.

• Being thixotropic, HAPCOAT 667-669 applies easily with a brush, and will not sag when applied to a vertical surface.  

• Easily machined and can be drilled, tapped, or milled with conventional tools.

Advantages:

• When parts A & B are mixed, HAPCOAT 667-669 reaches a "tacked-up" (bubble gum) state in approximately 20-40 minutes.

• Continuous exposure to a high wear environment is possible with this system.

• Being elastomeric, the surface is resistant to dents and cracks.

• Being thixotropic, HAPCOAT 667-669 will not sag when applied to a vertical surface and allows the user a good, even coat.

• Parts are easily machined with regular tools. HAPCOAT 667-669 can be drilled, tapped, sanded, polished, and turned in a lathe

• May be used with a variety of curing agents to accommodate a wide range of application requirements.

Applications:

• Sample and production tools

• Patterns and fixtures
  Ideally suited for foundry applications

• Drilling fixtures

• Molding fixtures

• Sand blasting fixtures

• Checking gages

Typical Properties: