ELASTOSIL® P 7684/60 A/B and MinghuiLink RTV-4110 are both soft addition-cure silicones, with P 7684/60 at 12 Shore A and RTV-4110 at 10±1 Shore A. P 7684/60 offers a longer working window, lower published Part A viscosity and higher elongation, while RTV-4110 provides higher published tensile and tear strength for soft mold making and flexible reproductions.
Addition-Cure Silicone
Platinum-Cure Silicone
ELASTOSIL® P 7684/60 A/B and RTV-4110 are closely matched soft silicones, but they favor different priorities. P 7684/60 is better suited to applications requiring a longer working window, lower Part A viscosity, higher elongation and prosthetic or liner positioning. RTV-4110 is better aligned with soft mold making where higher published tensile and tear strength are more important.
ELASTOSIL® P 7684/60 A/B and RTV-4110 are closely matched soft silicones, at 12 Shore A and 10±1 Shore A respectively. RTV-4110 is slightly softer, while both provide high flexibility for soft molds and flexible components.
Both use a simple 1:1 mix ratio. P 7684/60 provides approximately 60 minutes of pot life at 23°C, compared with about 35 minutes for RTV-4110, giving P 7684/60 more time for mixing, degassing and controlled pouring.
Viscosity is also different. P 7684/60 publishes approximately 2,000 mPa·s Part A and 3,000 mPa·s Part B, while RTV-4110 publishes about 4,000 and 2,800 mPa·s respectively. P 7684/60 therefore has the lower Part A viscosity, while both remain pourable low-viscosity systems.
Mechanical performance favors RTV-4110 for strength. P 7684/60 publishes approximately 3 MPa tensile strength, 13 N/mm tear strength and 600% elongation, compared with 4.0±0.5 MPa, 25±0.5 N/mm and 510±50% for RTV-4110. P 7684/60 offers greater elongation, while RTV-4110 provides higher tensile and tear strength.
Application positioning is the main practical distinction. WACKER positions P 7684/60 for prosthetic liners, orthotics and skin-contact flexible applications, while RTV-4110 is more broadly suited to soft mold making and flexible reproductions. The choice therefore depends on whether processing flexibility and prosthetic positioning or mold durability and tear resistance are more important.
| Technical Parameter | WACKER ELASTOSIL® P 7684/60 A/B | MinghuiLink RTV-4110 |
|---|---|---|
| Silicone Type | Addition-cure RTV-2 | Platinum-cure silicone |
| Mix Ratio | 1:1 by weight | 1:1 by weight or volume |
| Shore Hardness | 12 Shore A | 10±1 Shore A |
| Viscosity | 2,000 mPa·s (Part A) | 4,000±200 mPa·s (Part A) |
| Working / Pot Life | 60 min @ 23°C | 35 min |
| Demold / Cure Time | Rapid room-temperature cure; conditions depend on part size and thickness | 5 h cure |
| Tensile Strength | 3 MPa | 4.0±0.5 MPa |
| Tear Strength | 13 N/mm | 25±0.5 N/mm |
| Elongation | 600% | 510±50% |
| Shrinkage | Not publicly listed | ≤0.1% |
| Temperature Resistance | Not publicly listed as an equivalent numerical service rating | Up to 250°C / 482°F |
| Typical Applications | Prosthetic liners, orthotics, prosthetics and skin-contact flexible applications | Soft mold making, flexible reproductions and delicate mold applications |
| Technical Data Sources | ELASTOSIL® P 7684/60 A/B | RTV-4110 |
| Key Factor | WACKER ELASTOSIL® P 7684/60 A/B | MinghuiLink RTV-4110 | What It Means |
|---|---|---|---|
| Hardness | 12 Shore A | 10±1 Shore A | RTV-4110 is slightly softer, while P 7684/60 provides slightly more body. |
| Mix Ratio | 1:1 | 1:1 | Both are simple to proportion for manual processing. |
| Working Time | 60 min @ 23°C | 35 min | P 7684/60 provides a longer processing window for mixing, degassing and pouring. |
| Component Viscosity | 2,000 / 3,000 mPa·s | 4,000 / 2,800 mPa·s | P 7684/60 has the lower Part A viscosity; both remain pourable systems. |
| Tensile Strength | 3 MPa | 4.0±0.5 MPa | RTV-4110 publishes the higher tensile-strength value. |
| Tear Strength | 13 N/mm | 25±0.5 N/mm | RTV-4110 provides a substantially higher published tear-strength value. |
| Elongation | 600% | 510±50% | P 7684/60 publishes greater stretch capability. |
| Application Positioning | Prosthetic liners, orthotics and skin-contact flexible applications | Soft mold making and flexible reproductions | P 7684/60 has more specific prosthetic and liner positioning. |
| Cure Information | Rapid room-temperature cure; no directly comparable fixed time published | 5 h cure | RTV-4110 provides the clearer published cure-time specification. |
| Application | ELASTOSIL® P 7684/60 A/B | RTV-4110 |
|---|---|---|
| Soft Mold Making | Strong candidate | Strong candidate |
| Undercut Reproduction | Strong candidate | Strong candidate |
| Delicate Reproductions | Strong candidate | Strong candidate |
| Prosthetic Liners | Strong candidate | Suitable |
| Orthotic Applications | Strong candidate | Suitable |
| Skin-Contact Applications | Strong candidate | Suitable with application-specific validation |
| Thin / Repeatedly Handled Parts | Suitable | Strong candidate |
| Large Flexible Parts | Strong candidate | Suitable |
Tell us your application. We’ll recommend the right RTV-2 silicone and provide a sample for testing.
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.