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



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 37,60 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. 228,06 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. 37,37 EUR (Price exclusive 21% VAT)



PMC-746 /11kg PMC-746 - transparent PU-pourable rubber, shore A60. Set 11 kg. 234,97 EUR (Price exclusive 21% VAT)



PMC-746 /54kg PMC-746 - transparent PU-pourable rubber, shore A60. Set 54 kg. 990,85 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 37,43 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 273,40 EUR (Price exclusive 21% VAT)





PMC-780 WET

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 37,60 EUR (Price exclusive 21% VAT)



PMC-780 Wet /11kg PMC-780 = 11 liter transparant pourable rubber, shore A 80.Set 11 kg. 265,73 EUR (Price exclusive 21% VAT)





PMC-780 DRY

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. 37,60 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 265,73 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). 37,60 EUR (Price exclusive 21% VAT)



PMC-790 /11kg PMC-790 - pourable rubber shore A90 for industrial use. Set 11 kg. 266,74 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.




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 0,75 EUR (Price exclusive 21% VAT)



Mixing

SO mixing cup 32oz /946ml Mixing and measuring beaker with measuring indication 1,00 EUR (Price exclusive 21% VAT)



SO mixing cup 64oz /1892ml Mixing and measuring beaker with measuringinformation 2,15 EUR (Price exclusive 21% VAT)



SO mixing cupr 165oz /4880ml Mixing and measuring beaker with measuringinformation 3,15 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 1,01 EUR (Price exclusive 21% VAT)



flat brush 40mm flat disposable brushes - 40 mm - per piece 1,13 EUR (Price exclusive 21% VAT)



flat brush 50mm flat disposable brushes - 50 mm - per piece 1,37 EUR (Price exclusive 21% VAT)



flat brush 60mm flat disposable brushes - 60 mm - per piece 1,73 EUR (Price exclusive 21% VAT)



flat brush 70mm flat disposable brushes - 70 mm - per piece 1,84 EUR (Price exclusive 21% VAT)



Calupaint flat brush 40mm Calupaint flat brush professionel 40 cm. 2,56 EUR (Price exclusive 21% VAT)



Calupaint flat brush 10mm Calupaint flat brush professionel 10 cm. 3,03 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 13,69 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 54,20 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)







(C) 2009 - All rights reserved

Print this page