The most complete line of liquid rubber compounds available anywhere in the world.

Data sheets are available on any of our products
upon request by calling (518) 373-2843

Smooth-Sil^TM Silicones

Smooth-Sil^TM Silicone Rubber Products have superior release properties and cover a broad spectrum of industrial and art related applications. These include making molds to reproduce architectural ornamentation, sculpture, prototype models and ceramics. You can also cast a variety of materials into Smooth-Sil^TM molds including plaster, resins and low melt metal alloys all without applying a release agent.

Smooth-Sil 950 (Addition Cure) – no post curing required and cures with virtually no shrinkage. Ideal for reproducing exact detail of any model. Hardness: 40A

Rubber Glass is a silicone rubber product developed specifically for special effects and display applications. The mixture cures to a solid water clear rubber that can be easily broken or "crumbled" into pieces that look exactly like broken glass, ice or diamonds. Hardness: 32A

VytaFlex(TM) Series

To address issues of color pigmenting concrete at various accounts, we introduced "extra dry" formulas incorporating our exclusive "V-Polymer" technology. Concrete casters report that the VytaFlex molds pictured here still going strong with no signs of shrinkage and no interference with color pigmenting of the concrete after more than a year!

Customers that use "In& Out II" water soluable release agent report that it works as well in releasing castings from VytaFlex molds as it does from any surface. They also report that, over a year of side-by-side testing, VytaFlex rubbers gave an improved surface finish on their concrete castings.

VytaFlex rubbers are mixed 1A:1B by volume, feature low viscosities and exceptional physical properties (equal to or better than their ReoFlex counterparts.) VytaFlex Shore 20A is formulated as clear amber for accurate color pigmenting and special f/x applications.

PMC-724 Urethane Liquid Rubber

Used by artists and industry the world over for a variety of design and casting applications, PMC-724 is by far the most versatile flexible mold compound available. It mixes and pours easily, curing to a durable rubber with negligible shrinkage. The low viscosity of PMC-724 ensures flawless pick-up of even the finest detail with minimal bubble entrapment.

PMC-724 PUTS YOU IN CONTROL! Using optional Part D, you can thicken PMC-724 to a paste-like consistency for vertical surface brush-on applications. If you like to work with a more flexible rubber, Part C is available to soften PMC-724 to lower durometers. A variety of colors and special effects can be achieved by adding color pigments, and for added project dimension, you can foam PMC-724.

Typical Applications:  Art Bronze Wax Molds (Lost Wax Process), Pre-cast Concrete Molds, Fiberglass Panel & Part Molds, Casting Urethane Resins and Epoxies, Special Effects, On-Site Architectural Restoration Molds

PMC-744 Liquid Rubber Compound

PMC-744 was developed specifically for the Hobby/Ceramics field and the making of ceramic molds. Years were spent in research and testing. The result is a compound that is excellent for making molds that are strong, durable and dimensionally stable. Low viscosity ensures fine detail. PMC-744 will last longer in production than plaster and will not shrink like latex, saving you time and money.

Typical Applications: Case Molds for Hobby/Ceramics, Plaster Block Molds, Architectural Restoration, Mechanical Rubber Parts, Pre-Cast Concrete, Special Effects, Ornamental Plaster, Casting Of A Variety Of Resins

Reoflex Series Liquid Rubber Compounds

Novice and master mold makers alike know the 1-2-1 series as the liquid rubber compounds that are easy to mix (1A to 1B by volume—scale not required) and easy to pour. The Reoflex series addresses a variety of applications from mold making (for restoration, concrete casting, sculpture, etc.) to special effects to electrical encapsulation.

Reoflex/20 added flexibility offers easier demold of pieces with undercuts.

Reoflex/30 & Reoflex/30 DRY - Very strong and durable for "soft" mold rubbers, Reoflex/30 has a built-in release agent that aids in the demold of plasters or concrete and helps extend mold life. Reoflex/30 DRY is preferred by model makers & sculptors.

Reoflex/40 - does not exude oil like Reoflex/30 or Reoflex/50. Reoflex/40 is suitable for electrical potting and encapsulation.

Reoflex/50 - contains a built-in release to aid in demold.offers good abrasion resistance and longevity for production casting of harder plasters (ultra-cal, hydra-cal) and concrete.

BRUSH-ON 50 "Brushable" Mold Compound

BRUSH-ON 50 was developed to offer superior tear strength and abrasion resistance. It offers a convenient one-to-one mix ratio by volume and gives the user ample working time to apply the material - in the studio or right on the work site.

With a creamy consistency, Brush-On 50 paints on easily to vertical surfaces. It will cure with negligible shrinkage to a durable rubber and will stand up to repeated casting of abrasive materials like concrete. BRUSH-ON 35 is a softer, more flexible version for fragile/intricate detail work.

Typical Brush on Applications: On-Site Architectural Restorations, Special Effects, Casting Cement/Concrete, Art Bronze Wax Molds

PMC-870 Liquid Rubber Compound

For those flexible mold applications that require a relatively hard rubber, PMC-770 offers strength, durability and wear resistance for repeated production use. PMC-770 is well suited for a number of industrial applications including gaskets and pulleys, vibration and shock pads and production use with cements, hard plasters, fiberglass resins and epoxies.

Typical Applications: Concrete Molds, Concrete Sampling Pads, Gaskets for Industrial Equipment, Vibration/Shock Pads, Pre-Cast Concrete, Industrial Rollers, Bushings and Diaphragms, Rubber Mechanical Parts.

PMC-726 Liquid Rubber Compound

PMC-726 offers all of the control and versatility of our popular PMC-724, but cures to an ultimate hardness of Shore A 60. It is ideal for casting chemically harsh materials (such as polyester and fiberglass - with use of PVA and release agent).

As with PMC-724, PMC-726 can be thickened for brushing on to available for vertical surfaces with optional Part D. Part C is softening PMC-726 to lower durometers.

Typical Applications: Architectural Reproductions, Industrial Rollers, Casting Resins (Fiberglass, Polyester, Urethane), Special Effects, Casting Epoxies.

PMC-780 Liquid Rubber Compound

PMC-780 has excellent working properties for a variety of industrial applications. It is a high modulus rubber that exhibits exceptional tear strength and resiliency. Even after prolonged use, PMC-780 maintains its flexibility and abrasion resistance. Industrial users find the clear amber feature useful for potting and encapsulation applications. Other uses include rubber to metal bonding, sound dampening and vibration shock pads.

Typical Applications: Encapsulation, Rubber to Metal Bonding, Industrial Wheels and Pulleys, Concrete Molds, Rubber Mechanical Parts, Drum Liners, Vibration Shock Pads, Concrete Stamping Molds

PMC-746 Liquid Rubber Compound

PMC-746 was developed to make molds for casting gypsum plasters and like PMC-744, is particularly well suited for use as a case mold - especially large case molds where extra rigidity is required. Because of its durability and moisture resistant properties, PMC-746 is used by zoos and museums for a variety of molding, display/exhibit applications. Also, PMC-746 contains no mercury.

Typical Applications: Large Case Molds for Hobby/Ceramics, Plaster Block Mold, Pre-Cast Concrete, Ornamental Plaster, Special Effects, Casting Smooth-On Rigid Polyurethanes and Epoxies

PMC-790 Liquid Rubber Compound

PMC-790 was designed to meet the most stringent requirements of industrial applications. It is a very hard rubber that offers superior tear strength, tensile strength, impact and abrasion resistance. Because it is slightly harder than our 780, 790 is often used to make concrete stamping molds. It is also used to make ball liners, foundry patterns and metal forming pads. You can’t get a tougher rubber anywhere!

Typical Applications: Industrial Rollers and Belts, Concrete Stamping Molds, Rubber to Metal Bonding Applications, Concrete Molds, Ball Mill Liners, Metal Forming Pads, Casters and Impellers, Foundry Patterns

 Polysulfide Rubbers (Smooth-on FMC Series)

Polysulfide rubbers are quite versatile and are especially useful for casting plaster, Hydrocal, and other water mixed cements. They also find use for casting wax candles and some limited use for resin casting. They are easy to handle, non-adhesive and can be poured over clay or practically any type of model or pattern, using very simple release agents such as soap or vaseline. They can be used to take impressions directly from a water clay or plastelene model so that permanent master models can then be cast in plaster or Hydrocal.

The Smooth-on FMC flexible mold compounds are two-component polysulfide systems. The base compound (Part A) is mixed with the curing agent (Part B) just prior to application. Curing takes place with negligible shrinkage at room temperature producing molds suitable for casting gypsum plasters and cements and resin formulations that set with low exotherm.

Hardness and flexibility vary according to the specific product selected. Working time and setting time depend upon the curing agent used - fast, standard or slow. 

Ideal for a variety of industrial and art related projects. Available in a range of Shore A hardnesses from a sponge-like "00" to a harder-than-a-car-tire 90A. Good for making both pourable and brush-on molds, these products are easy to use (many are mixed 1:1 by volume - no scale necessary) and will last/perform in production.