描述
Santoprene 121-62M100 is a soft, black, UV-resistant thermoplastic vulcanizate (TPV) from Celanese developed for difficult injection molding applications and complex part geometries.
The grade belongs to the Santoprene 121 series of black UV-stabilized TPV materials. Unlike a conventional general-purpose TPV selected mainly by hardness, Santoprene 121-62M100 is engineered for improved flow and easier processability.
Celanese highlights fast and easy injection molding, especially for complex geometries, improved part surface appearance, sealing applications, and the ability to mold at lower temperatures or lower injection pressures. This makes the grade attractive for thin sections, long flow paths, detailed cavities and visible molded surfaces.
The current Shore A hardness is approximately 67, giving the material a medium-soft elastomeric feel. It is firmer than very soft sealing grades but remains sufficiently flexible for seals, gaskets, trims and technical molded parts.
Current Celanese grade data lists approximately 417% elongation at break, 4.65 MPa stress at break, 2.46 MPa stress at 100% elongation, 6.6 MPa shear modulus and approximately 19 kN/m initial tear resistance.
Low-temperature flexibility is also strong. Current data lists a brittleness temperature of approximately -60°C, supporting use in cold-weather automotive, outdoor and industrial environments.
Compression set is approximately 34% at 70°C for 24 hours and 47% at 125°C for 70 hours. These values provide useful design context for sealing parts that remain compressed during service.
The density is approximately 0.915 g/cm³, reflecting the polyolefin-based TPV structure. Celanese also states that the material is recyclable within the manufacturing stream.
A key processing characteristic of Santoprene 121-62M100 is its shear-dependent rheology. As shear rate increases, apparent melt viscosity decreases. This supports fast cavity filling when gate design, injection speed and melt conditions are optimized.
The current Celanese Product Finder positions 121-62M100 as an improved-flow TPV grade for easier processability, with Shore A 67 hardness, black appearance, 417% elongation, approximately 4.7 MPa tensile strength at break, 2.4 MPa stress at 100% elongation and 34% compression set.
The grade is UL recognized under QMFZ2.E80017 and QMFZ8.E80017, and current grade data lists UL 94 HB at 1.1 mm.
For more TPV materials, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the current Celanese portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 121-62M100
| Feature | Engineering Benefit |
|---|---|
| Improved Flow | Easier filling of complex or thin-wall injection molded parts |
| Fast Injection Molding | Supports efficient molding cycles |
| Lower Pressure Capability | Helps process difficult parts at reduced injection pressure |
| Lower Temperature Capability | Can be molded at lower temperatures in suitable applications |
| Improved Surface Appearance | Useful for visible and cosmetic molded parts |
| Shore A 67 | Balanced flexibility and support |
| 417% Elongation | Supports large deformation without brittle failure |
| UV Resistance | Useful for exterior and weather-exposed components |
| Good Chemical Resistance | Suitable for many automotive and industrial environments |
| -60°C Brittleness Temperature | Supports cold-weather use |
| UL Recognized | Current Celanese documentation references E80017 |
| Manufacturing-Stream Recyclability | Helps reduce controlled manufacturing scrap |
The strongest reason to select Santoprene 121-62M100 is the combination of medium-soft hardness, UV resistance and easier injection molding of complex parts.
Typical Applications for Santoprene 121-62M100
Santoprene 121-62M100 is primarily an injection-molding grade for sealing, automotive and technical elastomeric components.
| Application Area | Typical Use |
|---|---|
| Automotive Seals & Gaskets | Molded sealing components requiring improved flow |
| HVAC Flapper Door Seals | Flexible air-management sealing parts |
| Interior Components | Mats, flexible trim and technical molded parts |
| Exterior Trim | UV-resistant flexible exterior components |
| Weather Seals | Molded weather-exposed sealing parts |
| Under-Hood Components | Flexible technical parts requiring chemical resistance |
| Complex Molded Seals | Thin-wall or long-flow-path elastomeric parts |
| Flexible Grips | Consumer and industrial hand-contact components |
| Power Tool Components | Flexible grips and protective parts |
| Lawn & Garden Equipment | Outdoor elastomeric components |
| Sporting Goods | Flexible molded parts and grips |
| Thin-Walled Parts | Complex parts where improved flow is important |
The grade is especially relevant where standard TPV flow is insufficient or where molded surface quality is important.
Typical Properties of Santoprene 121-62M100
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 0.915 g/cm³ | ISO 1183 |
| Shore A Hardness, 15 s | 67 | ISO 48-4 / ISO 868 |
| Color | Black | Manufacturer information |
| Product Form | Pellets | Manufacturer information |
| Material Family | TPV / TPE-V | Manufacturer information |
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Stress at 100% Elongation | 2.46 MPa | ISO 527-1/-2 or ISO 37 |
| Stress at Break | 4.65 MPa | ISO 527-1/-2 or ISO 37 |
| Elongation at Break | 417% | ISO 527-1/-2 or ISO 37 |
| Shear Modulus | 6.6 MPa | ISO 6721 |
| Initial Tear Resistance, Die C | 19 kN/m | ISO 34-1 |
| Brittleness Temperature | -60°C | ASTM D746 |
| Low-Temperature Brittleness | -60°C | ISO 812 |
| Compression Set, 70°C / 24 h | 34% | ISO 815 |
| Compression Set, 125°C / 70 h | 47% | ISO 815 |
These values show that Santoprene 121-62M100 remains highly flexible while providing useful tear resistance and stiffness for technical molded components.
Heat Aging
Historical Celanese-derived data lists the following property changes after 150°C for 168 hours:
| Property Change | Typical Value |
|---|---|
| Tensile Strength Change | -14% |
| Elongation Change | -10% |
| Shore A Hardness Change | +2 |
Flammability
| Property | Typical Value | Test Method |
|---|---|---|
| UL 94 Rating | HB | UL 94 |
| Thickness Tested | 1.1 mm | UL 94 |
| UL Recognition | Yes | UL 94 |
| UL File | QMFZ2.E80017 / QMFZ8.E80017 | UL |
The grade is not a dedicated flame-retardant TPV. Its primary strengths are flow, UV resistance, flexibility and surface quality.
Why Choose Santoprene 121-62M100?
The main reason to choose Santoprene 121-62M100 is processability.
Elastomeric injection molding can become difficult when a cavity has thin walls, complex details or long flow paths. High pressure may be required, and poor flow can create short shots or visible defects.
Santoprene 121-62M100 was developed specifically to improve this situation. Celanese positions the grade for fast, easy injection molding of complex part geometries.
It can also be molded at lower injection pressure or lower molding temperature in suitable applications, which can reduce the processing burden on the machine and mold.
Improved surface appearance is another important advantage, making the grade attractive for visible automotive interior parts, exterior trim, grips and consumer components.
UV stabilization supports outdoor and exterior applications, while the -60°C brittleness temperature gives the grade useful cold-weather flexibility.
At Shore A 67, the material provides more support than very soft TPV grades while remaining flexible enough for sealing and trim functions.
For customers needing a black, UV-resistant, medium-soft TPV with improved injection flow, Santoprene 121-62M100 is a strong grade to evaluate.
Processing Guidelines for Santoprene 121-62M100
Santoprene 121-62M100 is designed primarily for:
- Injection molding
- Multi-injection molding
Grade-Specific Processing Conditions
| Processing Parameter | Celanese Guidance |
|---|---|
| Drying Temperature | 82°C |
| Drying Time | 3 hours in a dehumidified dryer |
| Maximum Processing Moisture | 0.08% |
| Maximum Regrind Level | 20% |
| Optimum Melt Temperature | 215°C |
| Mold Temperature Range | 10–52°C |
| Back Pressure | 0.345–0.689 MPa |
| Injection Speed | Fast |
| Vent Depth | 25 µm |
Celanese also provides a broad Santoprene TPV processing window of approximately 175–230°C.
The optimum melt temperature around 215°C is a practical starting point. Final conditions should be optimized according to wall thickness, flow length, gate size, cavity geometry and surface requirements.
Shear-Dependent Flow Behavior
Santoprene TPV is shear dependent. Apparent viscosity decreases as shear rate increases.
This means a faster injection rate can help Santoprene 121-62M100 fill thin sections and long flow paths more effectively. Processors should still balance higher speed against the risk of flash, burn marks, air traps, weld lines and gate damage.
Drying
Celanese recommends desiccant drying for approximately 3 hours at 80–82°C and controlling processing moisture to approximately 0.08% or lower.
Regrind
The current grade sheet lists a maximum regrind level of approximately 20%. Actual use should follow the application quality specification and OEM requirements.
Material Compatibility
Celanese states that Santoprene TPV is incompatible with acetal (POM) and PVC. Equipment should be thoroughly purged when switching between these materials and Santoprene 121-62M100.
Santoprene 121-62M100 vs. Santoprene 121-50M100
| Feature | Santoprene 121-62M100 | Santoprene 121-50M100 |
|---|---|---|
| Material Family | TPV | TPV |
| Color | Black | Black |
| Positioning | Improved-flow injection grade | Improved-flow injection grade |
| UV Stabilized | Yes | Yes |
| Shore A Hardness | 67 | 56 |
| Elongation at Break | 417% | 465% |
| Stress at Break | 4.65 MPa | Approx. 4.4 MPa |
| Stress @ 100% Elongation | 2.46 MPa | Approx. 1.8 MPa |
| Compression Set, 70°C | 34% | Approx. 31% |
| Main Difference | Firmer and stronger | Softer and more compliant |
Both grades are designed for improved flow and easier molding. Choose Santoprene 121-62M100 for greater hardness and support; choose 121-50M100 where greater softness is preferred.
Automotive Specification References
Current Celanese grade data lists multiple OEM references for Santoprene 121-62M100:
| OEM | Specification / Reference |
|---|---|
| General Motors | GMW15812, Type 5M |
| Mercedes-Benz Group | DBL 5562 |
| MAN | M3236 A6 |
| Hyundai | MS220-13, Type D-1 |
| Volkswagen Group | TL 526 22 MD05 |
| Volkswagen Group | TL 526 41C |
| Volkswagen Group | VW 50123 |
| Stellantis / Chrysler | MS-AR-100 BMV |
| Stellantis / FCA Group | 55248/02 EMP-60 |
| Geely | Q/JLY J7110166B |
| Li Auto | Q/LiA5310057 |
| SAIC Motor | SMTC 5 320 024 |
These references make the grade particularly relevant for automotive component suppliers evaluating a proven TPV platform.
Related Products
Santoprene 121-50M100 – Softer black improved-flow TPV with approximately Shore A 56 hardness.
Santoprene 121-75M100 – Firmer black improved-flow TPV with approximately Shore A 80 hardness.
Santoprene 121-60M200 – Black improved-flow TPV for automotive glass encapsulation and related molding applications.
View More TPV Thermoplastic Vulcanizates →
Technical Documents for Santoprene 121-62M100
| Document Type | Description |
|---|---|
| TDS | Current Celanese mechanical and processing data |
| SDS | Safety Data Sheet |
| UL Information | QMFZ2.E80017 / QMFZ8.E80017 |
| Automotive Approval Information | OEM specification references |
| Santoprene Product Finder | Celanese grade comparison and positioning |
| Processing Guide | Injection molding guidance |
| COA | Batch-specific quality information where available |
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FAQ About Santoprene 121-62M100
Q1: What is Santoprene 121-62M100?
Santoprene 121-62M100 is a black UV-resistant TPV from Celanese designed for fast, easy injection molding, especially complex geometries and sealing parts.
Q2: What is the Shore hardness?
The current Shore A hardness is approximately 67.
Q3: What is the elongation at break?
Current Celanese grade data lists approximately 417%.
Q4: What is the tensile stress at break?
The current value is approximately 4.65 MPa.
Q5: Why is Santoprene 121-62M100 considered an improved-flow grade?
Celanese specifically positions it for easier injection molding, complex part geometry, improved surface appearance and lower molding temperature or injection pressure.
Q6: What is the low-temperature performance?
The current brittleness temperature is approximately -60°C.
Q7: What is the compression set?
Current data lists approximately 34% at 70°C / 24 h and 47% at 125°C / 70 h.
Q8: Is Santoprene 121-62M100 UV resistant?
Yes. The current grade description specifically identifies it as a UV-resistant black TPV.
Q9: What processing temperature is recommended?
The current grade-specific optimum melt temperature is approximately 215°C. Celanese also gives a broad Santoprene TPV processing window of approximately 175–230°C.
Q10: What is the difference between Santoprene 121-62M100 and 121-50M100?
Both are black UV-stabilized improved-flow TPV grades. 121-62M100 is firmer at Shore A 67, while 121-50M100 is softer at approximately Shore A 56.
Request Santoprene 121-62M100 Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 121-62M100, please provide:
- Required quantity
- Destination country or port
- Automotive, industrial or consumer application
- Seal, gasket, trim or molded-part design
- Required Shore hardness
- Wall thickness and flow length
- Surface-appearance requirement
- Injection-pressure limitation
- Outdoor / UV exposure
- Chemical or fluid exposure
- Low-temperature requirement
- OEM specification requirement
- TDS, SDS, UL or COA requirement
- Sample requirement, if applicable
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