Dow Corning LogoSilastic Silicone Rubber

Ellsworth Adhesives proudly carries Dow Corning's Silastic line of silicone rubber mold making materials. Silastic is available in kits or as the separate base and curing agent components.  We carry a wide variety of Silastic silicone rubbers with varying tear, elongation, and detail characteristics. If you're unable to find a product online, request a quote.

Part # Sub Category Name Description
Silastic E 4.4kg Kit E RTV SIL RBBR 4.4KG KIT Silicone Rubber Silastic® E RTV Silicone Rubber Silastic® E RTV Silicone Rubber is a two-part silicone rubber; easy release, high elongation, minimal shrinkage, long work time, high strength, tear resistant and is acceptable for food contact. 4.4 kg kit.
Silastic E 5kg Kit E RTV SIL RBBR .5KG KIT Silicone Rubber Silastic® E RTV Silicone Rubber Silastic E RTV is a two-part silicone rubber; it has an easy release, high elongation, minimal shrinkage, long work time, high strength, it is tear resistant and acceptable for food contact. 0.5 kg kit.
Silastic 22kg Kit V RTV SIL RBBR KIT 22KG Silicone Rubber SILASTIC® V RTV Silicone Rubber SILASTIC® V RTV Silicone Rubber is a high strength silicone mold making rubber; it has outstanding release properties, low shrinkage, good dimensional stability and high elasticity; it can be made thixotropic. 22 kg pail.

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Silastic Silicone Rubber Base
Part # Sub Category Name Description
Silastic 3110 18.1kg 3110 RTV RUBBER 18.1KG PL Silicone Rubber Dow Corning® 3110 RTV Rubber Dow Corning® 3110 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 18.1 kg pail.
Silastic 3110 453g 3110 RTV RUBBER 453G BKT Silicone Rubber Dow Corning® 3110 RTV Rubber Dow Corning® 3110 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 453 gram plastic jar.
Silastic 3110 4kg 3110 RTV RUBBER 4KG PAIL Silicone Rubber Dow Corning® 3110 RTV Rubber Dow Corning® 3110 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 4 kg pail.
Silastic 3112 4kg 3112 RTV RUBBER 4KG Silicone Rubber Dow Corning® 3112 RTV Rubber Dow Corning® 3112 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 4 kg pail.
Silastic 3112 18.1kg 3112 RTV SIL RBR 18.1KG PL Silicone Rubber Dow Corning® 3112 RTV Rubber Dow Corning® 3112 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 18.1 kg pail.
Silastic 3112 453g 3112 RTV SIL RUBBER 453G Silicone Rubber Dow Corning® 3112 RTV Rubber Dow Corning® 3112 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 453 gram plastic jar.
Silastic 3120 181.4kg 3120 RTV RUBBER 181.4KG DR Silicone Rubber Dow Corning® 3120 RTV Rubber Dow Corning® 3120 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4,Catalyst F, and Catalyst S to give varying cure schedules. 181.4 kg drum.
Silastic 3120 453g 3120 RTV RUBBER 453G BKT Silicone Rubber Dow Corning® 3120 RTV Rubber Dow Corning® 3120 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 453 gram plastic jar.
Silastic 3120 4kg 3120 RTV RUBBER 4KG Silicone Rubber Dow Corning® 3120 RTV Rubber Dow Corning® 3120 RTV Rubber is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. Cures with Catalyst 1, Catalyst 4, Catalyst F, and Catalyst S to give varying cure schedules. 4 kg pail.
Silastic J 20.4kg J RTV SIL RBR BASE 20.4KG Silicone Rubber Silastic® J RTV Silicone Rubber Silastic® J RTV Silicone Rubber is a two-part silicone rubber; has good cut-growth resistance, low shrinkage, easy release, long mold life, highly detailed reproductions and simplified handling. Cures with J RTV C/A. 20.4 kg pail.
Silastic J 4kg J RTV SIL RUBBER BASE 4KG Silicone Rubber Silastic® J RTV Silicone Rubber Silastic® J RTV Silicone Rubber is a two-part silicone rubber; has good cut-growth resistance, low shrinkage, easy release, long mold life, highly detailed reproductions and simplified handling. Cures with J RTV C/A. 4 kg pail.
Silastic L 4kg L RTV SIL RBBR BASE 4KG Silicone Rubber Silastic® L RTV Silicone Rubber Silastic® L RTV Silicone Rubber is a two part pourable silicone rubber that has superior elongation, low modulus, high strength, good part removal, minimized tear, long mold life and is capable of deep undercuts and close tolerances. Cures with L RTV C/A.. 4 kg pail.
Silastic HS II 20.4kg HS II M/M RBBR BASE 20.4KG Silicone Rubber Dow Corning® HS II RTV High Strength Moldmaking HS II is a two-part medium viscosity moldmaking silicone rubber; it has high strength, excellent detail reproduction, low shrinkage, no exotherm and exceptional release. Cures with HS II Colored Catalyst.. 20.4 kg pail.
Silastic M 20.4kg M RTV SIL RBR BASE 20.4KG Silicone Rubber Silastic® M RTV Silicone Rubber Base Silastic M RTV is a two part silicone rubber that cures to be firm and flexible; it has high inhibition resistance, good cut growth resistance and low shrinkage. Cures with M RTV C/A.. 20.4 kg pail.
Silastic M 4kg M RTV SIL RBR BASE 4KG Silicone Rubber Silastic® M RTV Silicone Rubber Base Silastic M RTV is a two part silicone rubber that cures to be firm and flexible; it has high inhibition resistance, good cut growth resistance and low shrinkage. Cures with M RTV C/A. 4 kg pail.
Silastic S 4kg S RTV SIL RBR BASE 4KG PL Silicone Rubber Silastic® S RTV Silicone Rubber Base Silastic S RTV is a two part silicone moldmaking rubber that has outstanding release properties, medium hardness, high elasticity, high tear resistance and a fast, thick section cure. 4 kg pail.

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Silastic Silicone Rubber Curing Agents
Part # Sub Category Name Description
Silastic 1 Catalyst 1.8kg 1 CATALYST 1.8KG PAIL Silicone Rubber Curing Agents Dow Corning® 1 Catalyst Dow Corning® 1 Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 1.8 kg pail.
Silastic 1 Catalyst 413g 1 CATALYST 413G BUCKET Silicone Rubber Curing Agents Dow Corning® 1 Catalyst Dow Corning® 1 Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 413 gram plastic jar.
Silastic 1 Catalyst 45g 1 CATALYST 45G TUBE Silicone Rubber Curing Agents Dow Corning® 1 Catalyst Dow Corning® 1 Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 45 gram tube.
Silastic 3-6559 Cure Accelerator 3-6559 CURE ACCEL .45KG BT Silicone Rubber Curing Agents Dow Corning® Q3-6559 Q3-6559 is a one part concentrated additive solution of the same organo-platinum catalyst found in the base part of the Silastic moldmaking products. 0.45 kg bucket.
Silastic 4 Catalyst 45g 4 CATALYST 45G TUBE Silicone Rubber Curing Agents Dow Corning® 4 Catalyst 4 Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproductions of masters for moldmaking with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 45 gram tube.
Silastic F Catalyst 18.1kg F CATALYST 18.1KG PAIL Silicone Rubber Curing Agents Dow Corning® F Catalyst Dow Corning® F Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 18.1 kg pail.
Silastic F Catalyst 45g F CATALYST 45G TUBE Silicone Rubber Curing Agents Dow Corning® F Catalyst Dow Corning® F Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provide wide service temperature ranges and absorbs mechanical shock and vibration. 45 gram tube.
Silastic HS II Colored Catalyst 2kg HS II 10:1 COLORED CAT 2KG Silicone Rubber Curing Agents Dow Corning® HS II, 10:1, Colored Catalyst HS II is a two-part medium viscosity moldmaking silicone rubber; it has high strength, excellent detail reproduction, low shrinkage, no exotherm and exceptional release. Used to cure HS II Base. 2 kg pail.
Silastic J Curing Agent 400g J RTV RBBR C/A 400G Silicone Rubber Curing Agents Silastic® J RTV Silicone Rubber Silastic® J RTV Silicone Rubber is a two-part silicone rubber; has good cut-growth resistance, low shrinkage, easy release, long mold life, highly detailed reproductions and simplified handling. Used to cure J RTV Base. 400 gram bottle.
Silastic j Curing Agent 2kg J RTV SIL RBR C/A 2KG Silicone Rubber Curing Agents Silastic® J RTV Silicone Rubber Silastic® J RTV Silicone Rubber is a two-part silicone rubber; has good cut-growth resistance, low shrinkage, easy release, long mold life, highly detailed reproductions and simplified handling. Used to cure J RTV Base. 2 kg pail.
Silastic L Curing Agent .4kg L RTV CURING AGENT .4KG Silicone Rubber Curing Agents Silastic® L RTV Silicone Rubber Silastic® L RTV Silicone Rubber is a two part pourable silicone rubber that has superior elongation, low modulus, high strength, good part removal, minimized tear, long mold life and is capable of deep undercuts and close tolerances. Used to cure L RTV Base. 0.4 kg bottle.
Silastic M Curing Agent .4kg M RTV SIL RBR C/A .4KG Silicone Rubber Curing Agents Silastic® M RTV Silicone Rubber Curing Agent Silastic M RTV is a two part silicone rubber that cures to be firm and flexible; it has high inhibition resistance, good cut growth resistance and low shrinkage. Used to cure M RTV Base. 0.4 kg bottle.
Silastic M Curing Agent 2kg M RTV SIL RBR C/A 2KG Silicone Rubber Curing Agents Silastic® M RTV Silicone Rubber Curing Agent Silastic M RTV is a two part silicone rubber that cures to be firm and flexible; it has high inhibition resistance, good cut growth resistance and low shrinkage. Used to cure M RTV Base. 2 kg pail.
Silastic S Catalyst 1.8kg S CATALYST 1.8KG PAIL Silicone Rubber Curing Agents Dow Corning® S Catalyst Dow Corning® S Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making, with primer, provides wide service temperature ranges, absorbs mechanical shock and vibration. 1.8 kg pail.
Silastic S Catalyst 409g S CATALYST 409G BUCKET Silicone Rubber Curing Agents Dow Corning® S Catalyst Dow Corning® S Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 409 gram plastic jar.
Silastic S 45g S CATALYST 45G TUBE Silicone Rubber Curing Agents Dow Corning® S Catalyst Dow Corning® S Catalyst is easily mixed and poured, cures at room temperature, gives accurate reproduction of masters for mold making with primer, provides wide service temperature ranges and absorbs mechanical shock and vibration. 45 gram tube.


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