Description

Silastic 3110 RTV Low Viscosity Mould Making and Encapsulating Rubber is a high-performance, two-part addition-cure silicone elastomer designed for precision applications requiring exceptional flow and detail reproduction. This product matters because it offers a unique combination of very low viscosity for intricate mold filling and reliable, room-temperature vulcanization for ease of use. It is essential for industries and professionals needing to create highly accurate, durable molds or to provide protective, insulating encapsulation for sensitive electronic components and prototypes.

Application

• Precision Mold Making: Creating detailed molds for prototypes, architectural elements, artwork reproduction, and special effects.
• Electronic Potting and Encapsulation: Protecting sensitive circuits, sensors, and modules from moisture, vibration, and thermal stress.
• Rapid Prototyping: Producing accurate, flexible parts and models directly from master patterns.
• Tooling and Casting: Manufacturing flexible tools for casting with various materials like resins, foams, and low-melt metals.
• Gap Filling and Sealing: Penetrating and sealing fine cracks and voids in assemblies where other materials cannot flow.
• Medical Device Prototyping: Fabricating components and molds for non-implantable device development, benefiting from the material's stability and biocompatibility (for specific grades).

Basic Information

Product Name	Silastic 3110 RTV Low Viscosity Mould Making And Encapsulating Rubber
CAS No.	68037-71-8
Molecular Formula	(C2H6OSi)n • (C4H8O) (Representative for polydimethylsiloxane, vinyl-terminated with platinum catalyst system)
Molecular Weight	Varies (Polymer)
Synonyms	RTV-2 Silicone Rubber; Addition Cure Silicone; Low Viscosity Potting Silicone; Vinyl Siloxane Polymer; Platinum-Catalyzed Silicone Elastomer; Mold Making Silicone; Encapsulation Compound; Liquid Silicone Rubber (LSR); Silastic 3110; RTV Silicone
EINECS	Contact for details

Quality Control

Our Silastic 3110 RTV silicone is manufactured under strict quality management systems. Each batch is tested for critical parameters including viscosity, pot life, cure time, hardness, and tensile strength to ensure consistent, reliable performance. Certificates of Analysis (COA) detailing these specifications are available upon request. We adhere to relevant industry standards for polymer and elastomer production.

Storage

Preserve in a tightly closed, original container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). This product is hygroscopic (moisture-sensitive); exposure to atmospheric humidity can initiate premature curing. Keep away from heat, sparks, and open flame. Separate from strong acids, bases, and tin-cure silicone compounds to avoid inhibition of the platinum catalyst.

Specification

Item	Specification
Appearance (Part A & B)	Translucent liquid
Viscosity (Mixed, @25°C)	Very Low (e.g., < 5,000 cP)
Mix Ratio (A:B by weight)	1:1 (Typical)
Pot Life (@25°C)	30 - 60 minutes
Cure Time (Tack-Free @25°C)	4 - 6 hours
Shore A Hardness (Cured)	20 - 30
Tensile Strength (Cured)	> 3.5 MPa
Elongation at Break (Cured)	> 400%
Volume Resistivity	> 1.0 x 10^15 ohm·cm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.