描述
Santoprene 101-55 is a soft, black, versatile thermoplastic vulcanizate (TPV) from Celanese designed as a general-purpose elastomer grade for injection molding and extrusion.
It belongs to Celanese’s core Santoprene 101 series, which the current product finder identifies as a general-purpose TPV family offering high elastomeric performance for molding and extrusion applications.
The material combines rubber-like flexibility and elastic recovery with thermoplastic processing behavior. In practical terms, Santoprene 101-55 can be processed on conventional thermoplastic equipment while providing properties commonly associated with vulcanized rubber, including flexibility, low compression set, fatigue resistance and resistance to ozone.
Celanese specifically highlights two key features for this grade: excellent flex-fatigue resistance and excellent ozone resistance. These characteristics make Santoprene 101-55 suitable for seals, gaskets, bellows, diaphragms, flexible covers, air-management components, appliance parts and a wide range of industrial and automotive elastomeric components.
The grade has a current Shore A hardness of approximately 60, making it soft enough for sealing and flexible functions while still providing more support than very soft 40–50A TPV grades.
Current Celanese-derived data lists approximately 420% elongation at break, 5.01 MPa tensile stress at break, 1.88 MPa tensile stress at 100% elongation, and 18 kN/m tear strength.
Low-temperature behavior is another important advantage. The current brittleness temperature is approximately -60°C, demonstrating the grade’s ability to retain useful elastomeric behavior in cold environments.
Compression-set performance is also strong for a thermoplastic elastomer. Current data lists approximately 23% compression set at 70°C for 24 hours and 35% at 125°C for 70 hours.
This is particularly relevant to seals and gaskets because low compression set helps the material recover after being compressed for long periods.
Current thermal-use information lists a continuous upper temperature resistance of 135°C for 1,000 hours under SAE J2236. UL Relative Thermal Index values are approximately 90°C for electrical and mechanical-strength use at 1.5 mm, and up to 95°C for mechanical strength at 3.0 mm.
Santoprene 101-55 is also UL recognized under Celanese file references QMFZ2.E80017 and QMFZ8.E80017.
A further advantage is its broad automotive acceptance. Current Celanese data lists approvals or specification references from Ford, General Motors, Hyundai, Mercedes-Benz, Renault, Stellantis and Volkswagen Group.
This makes the grade useful not only as a general industrial TPV but also as a material with a long-established automotive qualification history.
The grade is polyolefin based and Celanese states that it is recyclable within the manufacturing stream. Controlled regrind can therefore be used in suitable manufacturing processes, subject to the application specification and quality requirements.
For more TPV materials, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the current Celanese TPV grade portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 101-55
| Feature | Engineering Benefit |
|---|---|
| Shore A 60 | Balanced softness and support for seals, gaskets and flexible molded parts |
| Excellent Flex-Fatigue Resistance | Supports repeated bending and cyclic deformation |
| Excellent Ozone Resistance | Useful for long-term outdoor and automotive elastomeric applications |
| -60°C Brittleness Temperature | Supports low-temperature service and cold-weather handling |
| 420% Elongation at Break | High ductility for flexible components |
| Low Compression Set | Helps seals retain force after long-term compression |
| Good Tear Resistance | 18 kN/m supports durability around edges and thin sections |
| Good Chemical Resistance | Suitable for many industrial and automotive environments |
| Injection Molding + Extrusion | Supports a wide range of manufacturing processes |
| Coextrusion Capability | Useful for soft sealing sections in multi-material profiles |
| UL Recognized | Current Celanese documentation lists QMFZ2.E80017 and QMFZ8.E80017 |
| Automotive OEM Approvals | Referenced by multiple major vehicle manufacturers |
The defining value of Santoprene 101-55 is its combination of general-purpose processability and strong rubber-like performance.
Typical Applications for Santoprene 101-55
Santoprene 101-55 is a versatile TPV and can be used across automotive, industrial, appliance, consumer and electrical applications.
| Application Area | Typical Use |
|---|---|
| Seals & Gaskets | Flexible static and dynamic sealing components |
| Automotive Air-Management Parts | Air-induction ducts, air-filter gaskets and flexible interfaces |
| Plugs & Grommets | Soft automotive and industrial protection components |
| Bumpers & Stops | Flexible impact and damping parts |
| Diaphragms | Cyclic flexible components benefiting from fatigue resistance |
| Tubing | Flexible technical tubing in compatible fluid environments |
| Appliance Components | Molded or extruded flexible parts |
| Electrical Parts | Insulating or protective elastomeric components |
| Profile Extrusion | Flexible seals and weather-resistant profiles |
| Sheet Extrusion | TPV sheet for fabricated elastomeric components |
| Coextruded Profiles | Soft TPV layer combined with compatible rigid substrates |
| Consumer Products | Flexible grips, covers and resilient components |
The grade is especially suitable where a designer needs a 60 Shore A black TPV with broad processing options and proven long-term elastomeric behavior.
Typical Properties of Santoprene 101-55
Physical & Rheological Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 970 kg/m³ / 0.970 g/cm³ | ISO 1183 |
| Shore A Hardness, 15 s | 60 | ISO 48-4 / ISO 868 |
| Molding Shrinkage – Parallel | 3.7% | ISO 294-4 / 2577 |
| Molding Shrinkage – Normal | 0.9% | ISO 294-4 / 2577 |
| Resin Identification | TPV | ISO 1043 |
| Part Marking Code | >TPV< | ISO 11469 |
| Color | Black | Manufacturer information |
| Delivery Form | Pellets | Manufacturer information |
The current shrinkage values were measured on approximately 2 mm thick specimens after at least 24 hours using Celanese test method TPE-X0080.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Stress at 100% Elongation | 1.88 MPa | ISO 37 |
| Tensile Stress at Break | 5.01 MPa | ISO 527-1/-2 or ISO 37 |
| Elongation at Break | 420% | ISO 527-1/-2 or ISO 37 |
| Tear Strength | 18 kN/m | ISO 34-1 |
| Brittleness Temperature | -60°C | ISO 974 / ASTM D746 |
| Compression Set, 70°C / 24 h | 23% | ISO 815 |
| Compression Set, 125°C / 70 h | 35% | ISO 815 |
The combination of 420% elongation, -60°C brittleness temperature and moderate compression set explains why Santoprene 101-55 is widely suited to sealing and flex-fatigue applications.
Heat Aging & Temperature Performance
| Property | Typical Value | Test Method |
|---|---|---|
| Continuous Upper Temperature Resistance, 1000 h | 135°C | SAE J2236 |
| RTI Electrical, 1.5 mm | 90°C | UL 746B |
| RTI Electrical, 3.0 mm | 90°C | UL 746B |
| RTI Strength, 1.5 mm | 90°C | UL 746B |
| RTI Strength, 3.0 mm | 95°C | UL 746B |
| Tensile Strength Change after 150°C / 168 h | -15% | ISO 188 |
| Tensile Strain-at-Break Change after 150°C / 168 h | +13% | ISO 188 |
| Shore A Change after 150°C / 168 h | -1 | ISO 188 |
These values provide useful context for long-term elastomeric performance at elevated temperature.
Flammability & Electrical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Burning Behavior @ 1.5 mm | HB | IEC 60695-11-10 |
| Burning Behavior @ 1.0 mm | HB | IEC 60695-11-10 |
| UL Recognition | Yes | UL 94 |
| Burning Rate @ 2 mm | 24 mm/min | ISO 3795 / FMVSS 302 |
| Relative Permittivity @ 60 Hz | 2.4 | IEC 62631-2-1 |
| CTI Performance Level Category | PLC 0 | UL 746A |
| Arc Resistance Category | PLC 6 | UL 746B |
| High-Amperage Arc Ignition @ 1.5 mm | PLC 0 | UL 746A |
The grade is not a dedicated flame-retardant TPV, but it has documented HB and electrical-performance data for technical part design.
Detergent Resistance
Current Celanese data also lists:
| Property | Rating | Standard |
|---|---|---|
| Detergent Resistance | f3 | UL 749 |
| Detergent Resistance | f4 | UL 2157 |
These ratings expand the grade’s usefulness in appliance environments, although Santoprene 101-55 remains positioned primarily as a general-purpose TPV, not as a specialized metal-stabilized detergent grade such as selected W255 materials.
Automotive OEM Approvals for Santoprene 101-55
Current Celanese material data lists the following automotive specification references for Santoprene 101-55:
| OEM | Specification / Approval Reference |
|---|---|
| Ford | WSD-M2D378-A1 |
| General Motors | GMW15813P-TPV-(EPDM+PP)-Type 4 |
| Hyundai | MS220-05 Type A |
| Mercedes-Benz | DBL 5562 |
| Renault | FRM 18-27-029 / special part approval context |
| Stellantis / Chrysler | MS-AR-100 AGN |
| Stellantis / FCA | 55248/02 EMP60 and related references |
| Volkswagen Group | VW 50123 |
These references make Santoprene 101-55 particularly useful for Tier 1 and automotive-component suppliers evaluating a widely recognized TPV platform.
Why Choose Santoprene 101-55?
The main reason to choose Santoprene 101-55 is its balanced general-purpose performance.
Many elastomer applications do not require an extremely specialized grade. Instead, they need a dependable material with predictable softness, fatigue life, ozone resistance, compression-set behavior, cold flexibility and established processability.
Santoprene 101-55 is designed for exactly this role.
At Shore A 60, the grade is soft enough for sealing and damping but firm enough to maintain geometry in gaskets, ducts, grommets and flexible housings.
The 420% elongation at break helps components survive large deformation without rupture.
Flex-fatigue resistance is especially valuable in bellows, diaphragms, air ducts and moving seals that undergo repeated cycles.
Ozone resistance supports outdoor and under-hood use where conventional elastomers can crack after long-term atmospheric exposure.
The -60°C brittleness temperature gives the grade strong cold-weather capability and supports automotive use in demanding climates.
Compression set is another important advantage. A seal must continue pressing against its mating surface after being compressed for long periods. The current 23% compression-set value at 70°C / 24 h provides a useful indicator of elastic recovery.
Thermoplastic processing provides a manufacturing advantage over conventional cured rubber. The material can be injection molded, extruded, sheet extruded and coextruded without the same vulcanization cycle required by thermoset elastomers.
For customers who need a widely approved, black 60A TPV with strong general-purpose elastomeric properties, Santoprene 101-55 is one of the core grades to evaluate.
Processing Guidelines for Santoprene 101-55
Santoprene 101-55 supports:
- Injection molding
- Multi-injection molding
- Extrusion
- Sheet extrusion
- Coextrusion
Current Celanese processing data includes:
| Processing Parameter | Published Guidance |
|---|---|
| Drying Temperature | 82°C |
| Drying Time | 3 hours in a dehumidified dryer |
| General Santoprene TPV Processing Window | 175–230°C |
| Extrusion Melt Temperature Reference | 196°C |
| Maximum Regrind Level | 20% |
| Back Pressure | 0.517 MPa |
| Ejection Temperature | 89°C |
Celanese recommends desiccant drying for approximately 3 hours at 80–82°C before processing.
Santoprene TPV is shear dependent. As shear rate increases, apparent melt viscosity decreases. This is one reason Santoprene can fill thin sections and complex geometries effectively when gate, screw speed and injection rate are optimized.
For injection molding, evaluate:
- Melt temperature
- Mold temperature
- Injection speed
- Gate dimensions
- Holding pressure
- Cooling time
- Venting
- Part shrinkage
- Demolding behavior
For extrusion, optimize:
- Barrel-zone temperatures
- Adapter and die temperature
- Screw speed
- Melt pressure
- Draw-down
- Cooling
- Profile dimensions
- Surface finish
Celanese states that Santoprene TPV is incompatible with acetal (POM) and PVC. Equipment should be properly purged when changing between these materials and Santoprene.
Regrind
The current grade sheet lists a maximum regrind level of approximately 20%.
Actual regrind use should still be controlled according to:
- Part-performance requirements
- OEM specifications
- Appearance standards
- Contamination control
- Number of reprocessing cycles
Santoprene 101-55 vs. Santoprene 101-64
| Feature | Santoprene 101-55 | Santoprene 101-64 |
|---|---|---|
| Material Family | TPV | TPV |
| Color | Black | Black |
| Product Positioning | General purpose | General purpose |
| Processing | Extrusion & molding | Extrusion & molding |
| Shore A Hardness | 60 | 70 |
| Elongation at Break | 420% | Approx. 454% |
| Tensile Stress at Break | 5.0 MPa | Approx. 6.5 MPa |
| Tensile Stress @ 100% Elongation | 1.9 MPa | Approx. 2.8 MPa |
| Compression Set, Product Finder Reference | 23% | Approx. 25% |
| Main Selection Difference | Softer / more compliant | Harder / stronger |
Choose Santoprene 101-55 when the design needs a softer 60A elastomer with strong sealing, fatigue and flexibility characteristics.
Choose Santoprene 101-64 when the same general-purpose TPV concept is required with greater hardness and higher tensile stress.
Related Products
Santoprene 101-64 – Black general-purpose TPV with approximately Shore A 70 hardness for stronger and firmer elastomeric components.
Santoprene 101-73 – Black general-purpose TPV with approximately Shore A 78 hardness for higher-stiffness sealing and molded applications.
Santoprene 101-55W255 – Specialized black TPV for detergent exposure and protection against copper / metal-catalyzed degradation.
View More TPV Thermoplastic Vulcanizates →
Technical Documents for Santoprene 101-55
| Document Type | Description |
|---|---|
| TDS | Current Celanese mechanical, thermal, electrical, flammability and processing data |
| SDS | Safety Data Sheet |
| UL Information | QMFZ2.E80017 / QMFZ8.E80017 recognition |
| Automotive Approval Information | Ford, GM, Hyundai, Mercedes-Benz, Stellantis and VW specification references |
| Santoprene Product Finder | Grade comparison and application positioning |
| COA | Batch-specific quality information where available |
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FAQ About Santoprene 101-55
Q1: What is Santoprene 101-55?
Santoprene 101-55 is a soft black general-purpose TPV from Celanese with approximately Shore A 60 hardness. It is designed for injection molding and extrusion and provides excellent flex-fatigue and ozone resistance.
Q2: What is the hardness of Santoprene 101-55?
The current Celanese value is approximately Shore A 60 after a 15-second reading.
Q3: What is the elongation at break?
Current data lists approximately 420% elongation at break.
Q4: What is the tensile strength?
The current tensile stress at break is approximately 5.01 MPa, with approximately 1.88 MPa tensile stress at 100% elongation.
Q5: How does Santoprene 101-55 perform at low temperature?
The current brittleness temperature is approximately -60°C, making the grade suitable for many cold-weather applications.
Q6: What is the compression set?
Current Celanese data lists approximately 23% at 70°C / 24 h and 35% at 125°C / 70 h.
Q7: Is Santoprene 101-55 suitable for automotive applications?
Yes. Current Celanese data lists specification references from Ford, GM, Hyundai, Mercedes-Benz, Renault, Stellantis and Volkswagen Group.
Q8: Can Santoprene 101-55 be injection molded and extruded?
Yes. Celanese lists injection molding, multi-injection molding, extrusion, sheet extrusion and coextrusion.
Q9: What processing temperature is recommended?
Current Celanese processing notes give a broad Santoprene TPV processing window of approximately 175–230°C, with an extrusion melt-temperature reference around 196°C for this grade.
Q10: What is the difference between Santoprene 101-55 and 101-64?
Both are black general-purpose TPV grades. Santoprene 101-55 is softer at Shore A 60, while 101-64 is approximately Shore A 70 and provides higher tensile stress.
Request Santoprene 101-55 Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 101-55, please provide:
- Required quantity
- Destination country or port
- Automotive, industrial, appliance or consumer application
- Seal, gasket, tube, profile or molded-part design
- Required Shore hardness
- Continuous and peak operating temperature
- Minimum service temperature
- Compression-set requirement
- Chemical or fluid exposure
- Injection-molding or extrusion process
- OEM specification requirement
- TDS, SDS, UL or automotive approval documents required
- Sample requirement, if applicable
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