Dragon Skin™ 10 MEDIUM and RTV-4110 are both Shore A10 platinum-cure RTV-2 silicones designed for soft and flexible applications. While they share the same nominal hardness and 1:1 mix ratio, their published viscosity, working time and mechanical properties differ significantly. This comparison reviews the available manufacturer data to clarify where the two materials differ in processing, flexibility, strength and application suitability.
Platinum-Cure Silicone
Platinum-Cure Silicone
Dragon Skin™ 10 MEDIUM and RTV-4110 are both Shore A10 platinum-cure silicones, but they offer different balances of flexibility, processing characteristics and published mechanical performance.
Dragon Skin™ 10 MEDIUM and RTV-4110 occupy the same Shore A10 hardness range, but their published data suggest different priorities for users working with very soft silicone. Both can be considered for flexible molds and detailed shapes where easier demolding is important, while Dragon Skin™ 10 MEDIUM is also widely positioned for soft silicone parts, skin effects, prosthetics and cushioning applications.
The most noticeable difference is elongation. Smooth-On reports 1,000% elongation for Dragon Skin™ 10 MEDIUM, compared with 510% for RTV-4110. A high elongation value can be useful when a mold or finished silicone part must undergo substantial stretching or deformation during demolding or use. However, elongation should not be considered in isolation because mold design, tear strength and the geometry of the part also affect durability.
Processing behavior is also different. Dragon Skin™ 10 MEDIUM has a published 20-minute pot life, while MinghuiLink lists a 35-minute working time for RTV-4110. Both products are listed with approximately 5 hours of cure time under their respective stated conditions. For users making larger or more detailed molds, the longer published working time of RTV-4110 may provide more time for mixing, pouring and air release before the material begins to cure.
Viscosity requires careful interpretation in this comparison. Smooth-On reports 23,000 cps for mixed Dragon Skin™ 10 MEDIUM, while MinghuiLink reports approximately 4,000 mPa·s for Part A of RTV-4110. Because these values refer to different stages or measurement points, they should not be treated as a direct like-for-like viscosity ranking. In practical use, actual flow, bubble release and detail reproduction should be evaluated with the intended mold geometry and pouring method.
For complex undercuts, the combination of softness and elasticity can be more important than hardness alone. Dragon Skin™ 10 MEDIUM is specifically promoted for highly flexible molds and can be used in applications where the cured rubber needs to stretch significantly. RTV-4110 is positioned by MinghuiLink for soft molds, intricate prototyping, food molds, medical models and other applications requiring flexible demolding and fine detail reproduction.
| Technical Parameter | Smooth-On Dragon Skin™ 10 MEDIUM | MinghuiLink RTV-4110 |
|---|---|---|
| Silicone Type | Platinum-cure silicone | Platinum-cure silicone |
| Color | Translucent | Translucent |
| Specific Gravity | 1.07 g/cc (1.07 g/cm³) | 1.05–1.07 g/cm³ |
| Mix Ratio | 1A:1B by volume or weight | 1A:1B by weight or volume |
| Shore Hardness | 10 Shore A | 10 Shore A |
| Viscosity | 23,000 cps (mixed) | 4,000 mPa·s* (Part A) |
| Working / Pot Life | 20 min | 35 min |
| Cure Time | 5 hours | 5 hours |
| Tensile Strength | 475 psi (~3.28 MPa) | 4.0 MPa |
| Tear Strength | 102 pli (~17.9 N/mm) | 25.0 N/mm |
| Elongation | 1,000% | 510% |
| Shrinkage | <0.001 in./in. (<0.1%) | ≤0.1% |
| Heat Resistance | 232°C / 450°F | 250°C / 482°F |
| Food Contact | Not publicly listed | FDA 21 CFR compliant food-grade silicone |
| Skin Safety | Certified by an independent laboratory as skin safe | Not publicly listed |
| Technical Data Sources | Dragon Skin™ 10 MEDIUM | RTV-4110 |
| Key Factor | Smooth-On Dragon Skin™ 10 MEDIUM | MinghuiLink RTV-4110 | What It Means |
|---|---|---|---|
| Flexibility | 10 Shore A; 1,000% elongation | 10 Shore A; 510% elongation | Both are soft and flexible, while Dragon Skin™ 10 MEDIUM has substantially higher published elongation. |
| Viscosity | 23,000 cps (mixed) | 4,000 mPa·s (Part A) | The published values differ considerably, but they are measured at different points and should not be treated as a direct like-for-like comparison. |
| Working Time | 20 min pot life | 35 min working time | RTV-4110 provides more published working time for mixing and pouring. |
| Cure Time | 5 hours | 5 hours | Both are listed with approximately the same published cure time under the stated conditions. |
| Mechanical Profile | 475 psi tensile; 102 pli tear; 1,000% elongation | 4.0 MPa tensile; 25.0 N/mm tear; 510% elongation | RTV-4110 reports higher published tensile and tear strength, while Dragon Skin™ 10 MEDIUM reports substantially higher elongation. |
| Specialized Positioning | Skin effects, prosthetics, cushioning, flexible molds and industrial applications | Food molds, medical models, intricate prototyping and flexible mold making | The published application focus differs, so the intended end use should be considered before selecting the material. |
| Application | Dragon Skin™ 10 MEDIUM | RTV-4110 | Key Consideration |
|---|---|---|---|
| Flexible / Complex Molds | Suitable | Suitable | Both are soft enough for flexible demolding; Dragon Skin™ 10 MEDIUM has much higher published elongation for extreme stretching. |
| Resin Casting | Suitable | Suitable | Consider mold flexibility, release requirements, working time and repeated casting cycles. |
| Food Molds | Not publicly listed | Suitable | RTV-4110 is positioned as food-grade and the manufacturer states compliance with FDA 21 CFR standards. Dragon Skin™ 10 MEDIUM should not be assumed to have equivalent food-contact status without applicable documentation. |
| Medical Models | Suitable | Suitable | Dragon Skin™ is positioned for medical prosthetics and cushioning, while RTV-4110 is positioned for medical modeling. The exact application and required certification should be evaluated. |
| Skin Effects / Prosthetics | Suitable | Not specifically listed | Dragon Skin™ 10 MEDIUM has specific published positioning for skin effects and prosthetics and is certified as skin safe after curing. |
| Intricate Prototyping | Suitable | Suitable | Both can capture fine details; consider viscosity, working time, mold flexibility and the compatibility of the master pattern. |
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Competitor specifications are based on publicly available manufacturer documentation, with links to the original sources where available. Missing values are shown as “Not publicly listed” and are not estimated or inferred. Specifications may change, so always check the latest manufacturer documentation and conduct application-specific testing before production use. Product names and trademarks belong to their respective owners. This comparison is provided for technical and informational purposes only and is not endorsed by the brands mentioned.