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PMC-hard rubbers

PMC-Series

These are somewhat harder PU-rubbers that are traditionally used in the ceramic industry.
They exhibit excellent wear resistance, cure with negligible shrinkage and are economical.


Technical bulletin PMC 744
Technical bulletin PMC 746
Technical bulletin PMC 770
Technical bulletin PMC 780
Technical bulletin PMC 790

  • -744
  • -746
  • -770
  • -780 WET
  • -780 DRY
  • -790
  • Table
  • Instructions

PMC-744 info

PMC-744 has been used for years by mold making professionals to cast plaster, concrete, resins, etc. It is excellent for making molds that are strong, durable and dimensionally stable. Low viscosity ensures fine detail reproduction.

PMC-744 is ideal for making ceramic case molds and plaster block molds, reproducing ornamental plaster, making molds for casting concrete, casting a variety of Smooth-On urethane resins, casting wax and making a variety of mechanical rubber parts.

- Semi Transparent Amber Colour
- Shore 44A

Technical Bulletin

PMC-744

  • PMC-744 /1,5kg

    Semi-transperant, amber-coloured P.U. Pourable rubber. Great for pouring plaster. Shore hardness of 44. set 1,35 kg

    31,60 EUR (Price exclusive 21% VAT)

  • PMC-744 /11kg

    Semi-transperant, amber-coloured P.U. Pourable rubber. Great for pouring plaster. Shore hardness of 44. set 10,8 kgs.

    191,65 EUR (Price exclusive 21% VAT)

PMC-746 info

PMC-746 was developed to make molds for casting gypsum plasters. It is well suited for use as a rubber case mold – especially large case molds where extra rigidity is required. Durability and moisture resistant properties PMC-746 is also used by zoos and museums for a variety of mold-making, display and exhibit applications. Other applications include making plaster block molds, reproducing ornamental plaster, pre-cast concrete molds, casting waxes, rigid polyurethanes, epoxies and a variety of special effects.

Shore hardness is 60 A
mix ratio: 2:1 by weight or volume
contains no mercury.

Technical Bulletin

PMC-746

  • PMC-746 /1,5kg

    PMC-746 - transparent PU-pourable rubber, shore A60. Set 1,5 kg.

    31,40 EUR (Price exclusive 21% VAT)

  • PMC-746 /11kg

    PMC-746 - transparent PU-pourable rubber, shore A60. Set 11 kg.

    197,45 EUR (Price exclusive 21% VAT)

  • PMC-746 /54kg

    PMC-746 - transparent PU-pourable rubber, shore A60. Set 54 kg.

    832,65 EUR (Price exclusive 21% VAT)

PMC-770

Shore 70A rubber that has exceptional dimensional stability. It is suitable for production casting of abrasive materials such as concrete (pre-cast concrete, making concrete stamping pads, etc.) and gypsum plasters with high exotherms. Suitable for rubber mechanical parts of varying configurations (gaskets, wheels, pulleys) as well as ball mill liners and vibration/shock pads.

Shore 70A hardness
mixed two parts A to one part B by weight

PMC-770 products

  • PMC-770 /1,35kg

    Premium performance shore 70A hardness urethane rubber. 2A:1B by weight mix ratio. Scale required. Net Weight : 3 Lbs

    31,45 EUR (Price exclusive 21% VAT)

  • PMC-770 /11kg

    PMC-770 - 1 Gallon Unit Premium performance shore 70A hardness urethane rubber. 2A:1B by weight mix ratio. Scale required. Net Weight : 24 Lbs. / 10.89 kg

    229,75 EUR (Price exclusive 21% VAT)

PMC-780 WET

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PMC-780 Wet contains a built-in release agent to aid in demolding concrete. Both are used around the world for casting abrasive materials such as concrete (pre-cast concrete, making concrete stamping pads, etc.) and gypsum plasters with high exotherms.

PMC®-780 is a premium performance urethane rubber that offers exceptional strength, durability and abrasion resistance. PMC®-780 Dry does not exude an oil.

Shore 80A hardness
mixed two parts A to one part B by weight
negligible shrinkage

PMC-780 products

  • PMC-780 Wet /1,35kg

    PMC-780 is a hard pourable rubber with exceptional mechanical properties. High abrasion resistance. Shore 80. Wet version WITH build-in release agent. set 1,35 kg

    31,60 EUR (Price exclusive 21% VAT)

  • PMC-780 Wet /11kg

    PMC-780 = 11 liter transparant pourable rubber, shore A 80.Set 11 kg.

    223,30 EUR (Price exclusive 21% VAT)

PMC-780 DRY

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PMC®-780 Dry is also commonly used to make rubber mechanical parts of varying configurations (gaskets, wheels, pulleys) as well as ball mill liners and vibration/shock pads. PMC®-780 Dry does not exude an oil.

PMC®-780 is a premium performance urethane rubber that offers exceptional strength, durability and abrasion resistance.

Shore 80A hardness
mixed two parts A to one part B by weight
negligible shrinkage

PMC-780 products

  • PMC-780 DRY /1,5kg

    PMC-780 - pourable PU-rubber shore A80Dry version without build in release agentset 1,36 kgs.

    31,60 EUR (Price exclusive 21% VAT)

  • PMC-780 DRY /11kg

    PMC-780 is a hard pourable rubber with exceptional mechanical properties. High abrasion resistance. Shore 80. Dry version WITHOUT build-in release agent.set 10,88 kg

    223,30 EUR (Price exclusive 21% VAT)

PMC-790

PMC®-790 Urethane Rubber - PMC®-790 is an industrial urethane rubber compound designed to meet the most stringent requirements of industrial production applications. It is a very hard rubber that offers superior tear and tensile strength as well as impact and abrasion resistance.PMC®-790 is suitable for a variety of industrial applications including making concrete stamping pads, mold liners and molds for casting concrete. PMC®-790 is also good for making ball mill liners, industrial rollers and belts, rubber mechanical parts.


Shore 90A hardness

PMC-790 products

  • PMC-790 /1,5kg

    PMC-790Hard PU-pourable PU-rubber shore A90. For industrial useset 1,36 kgs. (A+B).

    31,60 EUR (Price exclusive 21% VAT)

  • PMC-790 /11kg

    PMC-790 - pourable rubber shore A90 for industrial use. Set 11 kg.

    224,15 EUR (Price exclusive 21% VAT)

PMC Properties Table

PMC A:B mixing ratio Demold Time Elongation at Break Mixed Viscosity Pot Life Shore A Hardness Tear Strength Specific Gravity kg/lt
744 2:1 weight/ volume 16 hrs 400 % 3400 cps 15 min 44 A 90 pli 1,000
746 2:1 weight/ volume 16 hrs 650 % 1200 cps 15 min 60 A 100 pli 1,000
770 2:1 by weight 16 hrs 600% 3000 cps 35 min 70 A 160 pli 1,015
780 2:1 weight/ volume 48 hrs 700% 2000 cps 25 min 80 A 200 pli 1,015
790 2:1 weight/ volume 48 hrs 600 % 3000 cps 20 min 90 A 300 pli 1,068

Preparation - Materials should be stored and used in at room (73°F/23°C). Humidity should be low. These products have a limited shelf life and should be used as soon as possible. Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk. Good ventilation (room size) is necessary.

Some Materials Must Be Sealed - To prevent adhesion between the rubber and model surface, models made of porous materials (gypsum plasters, concrete, wood, stone, etc.) must be sealed prior to applying a release agent. SuperSeal® or One Step® (available from Smooth-On) are fast drying sealers suitable for sealing porous surfaces without interfering with surface detail. Shellac is suitable for rough contours. A high quality Shellac is suitable for sealing modeling clays that contain sulfur or moisture (water based). Thermoplastics (polystyrene) must also be sealed with shellac or PVA.

In all cases, the sealing agent should be applied and allowed to completely dry prior to applying a release agent.

Non-Porous Surfaces - Metal, glass, hard plastics, sulfur free clays, etc. require only a release agent.

Applying A Release Agent - A release agent is necessary to facilitate demolding when casting into or over most surfaces. Use a release agent made specifically for mold making (Universal® Mold Release). A liberal coat of release agent should be applied onto all surfaces that will contact the rubber.

IMPORTANT: To ensure thorough coverage, lightly brush the release agent with a soft brush over all surfaces of the model. Follow with a light mist coating and let dry for 30 minutes.

Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.

IMPORTANT: Shelf life of product is reduced after opening. Remaining product should be used as soon as possible. Immediately replacing the lids on both containers after dispensing product will help prolong the shelf life of the unused product. XTEND-IT® Dry Gas Blanket (available from Smooth-On) will significantly prolong the shelf life of unused liquid urethane products.

MEASURING & MIXING - Liquid urethanes are moisture sensitive and will absorb atmospheric moisture. Mixing tools and containers should be clean and made of metal, glass or plastic. Materials should be stored and used in a warm environment (73°F/23°C).

IMPORTANT: Pre Mix the Part B before using. After dispensing equal amounts of Parts A and B into mixing container, mix thoroughly for at least 3 minutes making sure that you scrape the sides and bottom of the mixing container several times.

If Mixing Large Quantities (16 lbs./7 kg. or more) at one time, use a mechanical mixer (i.e. Squirrel Mixer or equal) for 3 minutes followed by careful hand mixing for one minute as directed above. Then, pour entire quantity into a new, clean mixing container and do it all over again.

Although this product is formulated to minimize air bubbles in the cured rubber, vacuum degassing will further reduce entrapped air. A pressure casting technique using a pressure chamber can yield totally bubble free castings. Contact Smooth-On or your distributor for further information about vacuum degassing or pressure casting.

Pouring - For best results, pour your mixture in a single spot at the lowest point of the containment field. Let the rubber seek its level up and over the model. A uniform flow will help minimize entrapped air. The liquid rubber should level off at least 1/2” (1.3 cm) over the highest point of the model surface.

Curing - Allow rubber to cure overnight (at least 16 hours) at room temperature (73°F/23°C) before demolding. Cure time can be reduced with mild heat or by adding Smooth-On “Kick-It®” Cure Accelerator. Do not cure rubber where temperature is less than 65°F/18°C.

Post Curing - After rubber has cured at room temperature, heating the rubber to 150°F (65°C) for 4 to 8 hours will increase physical properties and performance.

Using The Mold - If using as a mold material, a release agent should be applied to the mold before each casting. The type of release agent to use depends on the material being cast. The proper release agent for wax, liquid rubber or thermosetting materials (i.e. Smooth-On liquid plastics) is a spray release made specifically for mold making (available from Smooth-On or your distributor). Prior to casting gypsum plaster materials, sponge the mold with a soap solution for better plaster flow and easy release. In & Out® II Water Based Release Concentrate (available from Smooth-On) is recommended for releasing abrasive materials like concrete.

Performance & Storage - Fully cured rubber is tough, durable and will perform if properly used and stored. The physical life of the rubber depends on how you use it. Shrinkage will be higher with wet vs. dry rubbers. Contact Smooth-On directly with questions about this material relative to your application.

  • ++
  • Mixing, Measuring & Weighting
  • Brushes
  • Protective Gear
  • Release Agents

You might also need...

  • Mixing Beakers
  • Measuring Cups & Jars
  • Weighting devices
  • Brushes
  • Protective Gear such as gloves
  • Release agents

Mixing, Measuring & Weighing

Mixing

  • Measuring Cup 30ml

    Measuring cup 30ml + graduation

    0,20 EUR (Price exclusive 21% VAT)

  • Measuring cup 125ml

    Measuring cup 125 ML + Graduation

    0,50 EUR (Price exclusive 21% VAT)

  • mixing / measuring cup 350 ml

    Mixing and measuring beaker with measuring indication - 350 ml

    0,35 EUR (Price exclusive 21% VAT)

  • mixing / measuring cup 700 ml

    Mixing and measuring beaker with measuring indication - 700 ml

    0,45 EUR (Price exclusive 21% VAT)

  • mixing / measuring cup 1400 ml

    Mixing and measuring beaker with measuring indication - 1400 ml

    0,50 EUR (Price exclusive 21% VAT)

  • mixing / measuring cup 2300 ml

    Mixing and measuring beaker with measuring indication - 2300 ml

    0,70 EUR (Price exclusive 21% VAT)

  • SO mixing cup 16oz /473ml

    Mixing and measuringbeaker with measuringindication

    0,70 EUR (Price exclusive 21% VAT)

Mixing

  • SO mixing cup 32oz /946ml

    Mixing and measuring beaker with measuring indication

    0,90 EUR (Price exclusive 21% VAT)

  • SO mixing cup 64oz /1892ml

    Mixing and measuring beaker with measuringinformation

    2,00 EUR (Price exclusive 21% VAT)

  • SO mixing cupr 165oz /4880ml

    Mixing and measuring beaker with measuringinformation

    2,90 EUR (Price exclusive 21% VAT)

  • Mixing beaker round 500cc

    Mixing Beaker, Round, Polypropylene, 500 cc contents

    0,25 EUR (Price exclusive 21% VAT)

  • mixing beaker 1000cc

    plastic mixing beaker 1162 ml. transparant

    0,45 EUR (Price exclusive 21% VAT)

  • Mixing Bowl 2000 ml

    Square mixing Bowl white 180x180 mm; 2000 cc

    0,75 EUR (Price exclusive 21% VAT)

  • Flexible mixing cup 500ml

    Flexible mixing bowl for gypsum, alginate etc. 500 ml

    12,48 EUR (Price exclusive 21% VAT)

Mixing

  • Flexible mixing cup 1750ml

    Flexible mixing bowl for gypsum, alginate etc. 1750 ml

    16,19 EUR (Price exclusive 21% VAT)

  • Syrenge 50ml

    Injection syringe 50 cc with catheter nozzle.

    2,14 EUR (Price exclusive 21% VAT)

  • stirring stick 22cm

    mixing stick small model 220x17x3 mm

    0,10 EUR (Price exclusive 21% VAT)

  • stirring stick 30cm

    strong stirring stick - 30cm / price per piece

    0,20 EUR (Price exclusive 21% VAT)

  • Colad Turbomix /per 200

    Paint stirrers Professional per 200 stirrers in dispenser.

    46,15 EUR (Price exclusive 21% VAT)

  • Turbine Mixer

    Mechanical mixer for use with electrical drill

    12,24 EUR (Price exclusive 21% VAT)

  • Tristar KW2430 Scale

    Easy to use kitchen scale. device weighs up to 2 kg. accurate to the gram.

    16,70 EUR (Price exclusive 21% VAT)

Brushes

  • flat brush 30mm

    flat disposable brushes - 30 mm - per piece

    0,85 EUR (Price exclusive 21% VAT)

  • flat brush 40mm

    flat disposable brushes - 40 mm - per piece

    0,95 EUR (Price exclusive 21% VAT)

  • flat brush 50mm

    flat disposable brushes - 50 mm - per piece

    1,15 EUR (Price exclusive 21% VAT)

  • flat brush 60mm

    flat disposable brushes - 60 mm - per piece

    1,45 EUR (Price exclusive 21% VAT)

  • flat brush 70mm

    flat disposable brushes - 70 mm - per piece

    1,55 EUR (Price exclusive 21% VAT)

  • Calupaint flat brush 40mm

    Calupaint flat brush professionel 40 cm.

    2,15 EUR (Price exclusive 21% VAT)

  • Calupaint flat brush 10mm

    Calupaint flat brush professionel 10 cm.

    2,55 EUR (Price exclusive 21% VAT)

Protective Gear

  • Glove Vinyl Large /box 100pcs

    Glove Vinyl Large/Box of 100 pcs.

    10,75 EUR (Price exclusive 21% VAT)

  • Glove Vinyl Medium /box 100pcs

    Glove Vinyl Medium/Box of 100 pcs.

    10,75 EUR (Price exclusive 21% VAT)

  • Glove Vinyl Small /box 100pcs

    Glove Vinyl Small/Box of 100 pcs.

    9,45 EUR (Price exclusive 21% VAT)

  • Glove Vinyl X-Large /box 100pcs

    Glove Vinyl X-Large/Box of 100 pcs.

    10,75 EUR (Price exclusive 21% VAT)

  • Supergloves Large Latex /box 100pcs

    Supergloves Large Latex box 100 pcs

    11,50 EUR (Price exclusive 21% VAT)

  • Supergloves Latex small /box 100pcs

    Latex medical gloves, small, box of 100 pcs.

    11,50 EUR (Price exclusive 21% VAT)

  • Supergloves Latex Medium /box 100pcs

    Latex medical gloves, medium, box of 100 pcs.

    11,50 EUR (Price exclusive 21% VAT)

  • Supergloves Latex X-Large /box 100pcs

    Latex medical gloves, small, medium, large, xlarge, box of 100 pcs.

    11,50 EUR (Price exclusive 21% VAT)

  • Paint spray mask - type 6200 - S

    Comfortable and easy to wear paint spray mask. Complies with EN 140, 141 and 143. Supplied without filters. Size S

    31,08 EUR (Price exclusive 21% VAT)

  • Paint spray mask - type 6200 - M

    Comfortable and easy to wear paint spray mask. Complies with EN 140, 141 and 143. Supplied without filters. Size M

    29,95 EUR (Price exclusive 21% VAT)

  • Paint spray mask - type 6200 - L

    Comfortable and easy to wear paint spray mask. Complies with EN 140, 141 and 143. Supplied without filters. Size L

    29,95 EUR (Price exclusive 21% VAT)

  • Paint spray mask Colad

    Complet easy to wear paint spray mask. Supplied with filters.

    29,25 EUR (Price exclusive 21% VAT)

  • Filter ABEK1 for 3M 6200 maskers

    Protection against organic vapors, Inorganic and acid gases, Ammonia, and ammonia derivatives of

    19,45 EUR (Price exclusive 21% VAT)

  • 3M safety glasses Classic

    3M safety glasses Classic

    12,55 EUR (Price exclusive 21% VAT)

  • Stenchmask carbon fibre

    Stenchmask carbon fibre

    5,60 EUR (Price exclusive 21% VAT)

  • Gas and Vapormask Carbonfilters 3M

    Gas and Vapormask, Carbonfilters, 3M 4251

    45,55 EUR (Price exclusive 21% VAT)

Release Agents

Spray Releases

  • Acmos 82 aerosol /400gr

    Removable universal release agent/ wax based / aerosol spraycan

    14,66 EUR (Price exclusive 21% VAT)

  • Ease Release 200 aerosol /400gr

    Removable aerosol release agent - silicone based - 400 gram spraycan

    19,10 EUR (Price exclusive 21% VAT)

  • Ease Release 300 aerosol /400gr

    for PU, epoxy, polyester, RTV silicones and thermoplastics.

    17,43 EUR (Price exclusive 21% VAT)

  • Ease Release 400 aerosol /400gr

    Removable aerosol release agent - silicone based - spraycan 400grams

    17,67 EUR (Price exclusive 21% VAT)

  • Ease Release 500 aerosol /400gr

    Removable aerosol release agent - silicone based - spraycan 400 gram

    18,80 EUR (Price exclusive 21% VAT)

  • Universal Mold Release aerosol /400gr

    Silicon based Universal release agent - aerosol, without ozone gas - spraycan 400 grams

    16,90 EUR (Price exclusive 21% VAT)

  • Kwikee Sprayer - 946 ml Pressure Sprayer

    The Kwikee sprayer is an economical alternative to aerosols for dispensing release agents and sealing agents. It is a faster, labor-saving way to cover large models or molds and delivers sealing a...

    139,35 EUR (Price exclusive 21% VAT)

Paste Releases

  • PVA /500ml

    (Poly Vinyl Alcohol) Release agent for polyester - 500ml can

    8,09 EUR (Price exclusive 21% VAT)

  • PVA /1ltr

    (Poly Vinyl Alcohol) Release agent for polyester - 1 liter can.

    12,85 EUR (Price exclusive 21% VAT)

  • Sonite Wax /3kgs

    universal release agent wax - bucket 3 kgs.

    59,38 EUR (Price exclusive 21% VAT)

  • Universal mold release /100ml

    Silicon based Universal release agent - liquid. Bottle 100 ml

    6,70 EUR (Price exclusive 21% VAT)

  • Vaseline /250gr

    petroleum jelly.

    4,05 EUR (Price exclusive 21% VAT)

  • Vaseline /1kg

    petroleum jelly.

    11,96 EUR (Price exclusive 21% VAT)

Sealers

  • SuperSeal /500ml

    SuperSeal - sealing and release agent - 500ml can

    28,56 EUR (Price exclusive 21% VAT)

  • Super Seal Kit

    SuperSeal & Ease Release 205 Combo Pack One 2-oz.

    11,35 EUR (Price exclusive 21% VAT)

  • SuperSeal /3,7lt

    SuperSeal - 1 Gallon Sealing Agent for Porous Surfaces

    60,04 EUR (Price exclusive 21% VAT)

Guide

Let us help you find your way.

The list below may help you find what you are looking for via an alternative path.

  • Lifecasting

    lifecasting aplications: alginate's, silicones and plaster bandages.

  • Molding

    flexible and rigid molding for all sorts of objects.

  • Casting

    a wide range of flexible and rigid casting materials.

  • Clear Products

    translucent or transparant rubbers and plastics.

  • Foam

    expanding flexible and rigid foams, rigid blocks.

  • Restoration

    restoring in- and exterior ornaments and buildings.

  • Metal / Stone / Wood Fillers

    cold castings and other fillers; plastic and metal powders.

  • Brushable Plastics & Coatings

    can be brushed on sculpted styrene or polyurethane foam.

  • Composites

    resins, poyester, epoxy, acrylic resin, glass fibres etc.

  • Epoxy Modelling

    putties that work like clay but get stone-hard without firing.

  • Performance Resins

    used for a variety of projects, but mainly used for industrial (design) applications.

  • Semi Rigids

    semi-rigid plastics with excellent impact resistance.

  • Accessories

    you might also need; sealers, release agents, tools and more.

  • Support Shells

    for mother molds and function wellas support shell.

  • Prototyping

    resins and other materials used for rapid prototyping.

  • Textile

  • Cosplay

    Products to make your own Cosplay Costumes and Props!

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