描述
Santoprene 6NM901A55/IW BLK is a black thermoplastic vulcanizate from Celanese designed for flexible sealing and injection-molded technical components.
The grade is based on a dynamically vulcanized elastomeric phase dispersed throughout a thermoplastic polyolefin matrix. This structure allows the material to provide rubber-like flexibility and recovery while retaining the processing advantages of a thermoplastic.
Typical grade-specific properties include:
- 56 Shore A hardness
- 0.961 g/cm³ density
- 430% elongation at break
- 4.9 MPa tensile stress at break
- 1.9 MPa tensile stress at 100% strain
- 3.7 MPa tensile stress at 300% strain
- 21 kN/m tear strength
Santoprene 6NM901A55/IW BLK is particularly suited to components requiring a combination of softness, sealing performance, environmental resistance and efficient injection molding.
The material is black and is suitable for technical components used in building, construction and general sealing environments.
A notable published application for this grade is drainage pipe seals, making the material particularly relevant to flexible sealing components exposed to moisture, environmental aging and repeated compression.
The grade also offers resistance to ozone, UV aging, weathering and a variety of chemical environments, supporting outdoor and industrial sealing applications.
For more TPV products, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the broader Santoprene portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 6NM901A55/IW BLK
| Feature | Engineering Benefit |
|---|---|
| 56 Shore A Hardness | Provides soft and flexible elastomeric behavior |
| Black Formulation | Suitable for technical seals, gaskets and construction components |
| 430% Elongation at Break | Allows substantial deformation without immediate failure |
| 4.9 MPa Tensile Strength | Provides useful mechanical durability |
| 21 kN/m Tear Strength | Helps resist propagation of tears in flexible components |
| Good Elastic Recovery | Supports repeated compression and deformation |
| Ozone Resistance | Useful for elastomeric parts exposed to atmospheric ozone |
| UV Aging Resistance | Supports applications exposed to light and outdoor environments |
| Weathering Resistance | Suitable for sealing parts subjected to environmental aging |
| Chemical Resistance | Useful around water solutions, detergents, acids, bases and selected chemicals |
| Flex-Fatigue Resistance | Supports repeatedly deformed elastomer components |
| Abrasion Resistance | Helps maintain performance in contact applications |
| Injection Moldable | Allows efficient production of complex sealing parts |
| Thermoplastic Processing | Eliminates conventional rubber vulcanization during part molding |
| Recyclability | Clean manufacturing scrap can be handled within appropriate thermoplastic production streams |
Typical Applications for Santoprene 6NM901A55/IW BLK
Santoprene 6NM901A55/IW BLK is particularly suitable for flexible injection-molded components requiring softness and environmental resistance.
| Application Area | Typical Use |
|---|---|
| Drainage Pipe Seals | Flexible seals for pipe and drainage systems |
| Building Seals | Construction sealing components |
| Gaskets | Soft compression gaskets |
| Pipe Components | Flexible sealing and interface components |
| Construction Equipment | Flexible protective and sealing parts |
| Industrial Seals | General elastomeric sealing components |
| Flexible Covers | Protective molded components |
| Grommets | Flexible cable or pipe protection |
| Bumpers | Soft impact-resistant parts |
| Protective Interfaces | Flexible interfaces between rigid components |
| Water-System Components | Selected non-pressure sealing parts |
| Injection-Molded Elastomer Parts | Complex soft components manufactured by thermoplastic molding |
The most specific published application is building and construction, particularly drainage pipe seals, so this should remain one of the primary application themes on the page.
Typical Properties of Santoprene 6NM901A55/IW BLK
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 961 kg/m³ / 0.961 g/cm³ | ISO 1183 |
| Shore A Hardness, 15 s | 56 | ISO 868 |
| Color | Black | Manufacturer Information |
| Material Family | TPV / TPE-V | Manufacturer Information |
| Product Form | Pellets / Granules | Manufacturer Information |
The grade designation contains A55, but the published measured hardness is 56 Shore A. For the SEO title and technical table, using 56 Shore A is therefore more accurate than simply calling the material 55A.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Stress at 100% Strain | 1.9 MPa | ISO 37 |
| Tensile Stress at 300% Strain | 3.7 MPa | ISO 37 |
| Tensile Stress at Break | 4.9 MPa | ISO 37 |
| Elongation at Break | 430% | ISO 37 |
| Tear Strength | 21 kN/m | ISO 34-1 |
| Tensile Set | 9% | ASTM D412 |
These properties provide Santoprene 6NM901A55/IW BLK with a relatively soft response combined with useful tear and tensile performance for flexible seals.
Compression Set Performance
Compression set is particularly important for components such as seals and gaskets because the material must recover after prolonged compression.
Published grade-specific values include:
| Test Condition | Typical Compression Set |
|---|---|
| 70°C / 22 h, Type A | 23% |
| 125°C / 70 h, Type A | 43% |
These values are useful when evaluating the grade for:
- Drainage pipe seals
- Compression gaskets
- Housing seals
- Flexible interfaces
- Building sealing components
A lower compression-set value generally indicates better recovery after the specified compression exposure.
Elastomeric Structure
Santoprene 6NM901A55/IW BLK is a thermoplastic vulcanizate, commonly abbreviated as TPV or TPE-V.
A TPV contains a dynamically vulcanized rubber phase distributed inside a thermoplastic matrix.
For this material system, the structure provides a useful balance between:
- Rubber-like softness
- Elastic recovery
- Thermoplastic melt processing
- Dimensional consistency
- High-volume injection molding
- Production scrap recovery
This makes the grade suitable where conventional rubber properties are desired but efficient thermoplastic processing is preferred.
Ozone & Weathering Resistance
Santoprene 6NM901A55/IW BLK is characterized by good resistance to ozone and weathering.
This is particularly useful for seals installed in:
- Buildings
- Drainage systems
- Industrial equipment
- Outdoor housings
- Utility components
Ozone exposure can cause cracking in some conventional elastomers when they are under strain.
A TPV grade with strong ozone resistance can therefore help maintain flexibility and surface integrity during long-term service.
UV Aging Resistance
The black formulation is also associated with good resistance to UV aging.
Potential UV-exposed applications include:
- Exterior seals
- Construction components
- Outdoor pipe interfaces
- Flexible covers
- Protective elastomeric parts
For long-term outdoor projects, the complete finished component should still be evaluated according to the customer’s required UV and weathering specification.
Chemical Resistance
Santoprene 6NM901A55/IW BLK offers resistance to a range of common chemical environments associated with elastomeric sealing.
Typical categories include:
- Water
- Aqueous solutions
- Detergents
- Dilute acids
- Bases
- Alcohols
- Selected solvents
This makes the grade useful for building and industrial applications where seals may encounter cleaning agents, moisture or environmental contamination.
Chemical compatibility should always be evaluated against the exact chemical concentration, temperature and exposure duration of the final application.
Flex-Fatigue Performance
Flexible sealing components can experience repeated:
- Compression
- Bending
- Stretching
- Installation deformation
- Recovery cycles
Santoprene 6NM901A55/IW BLK provides good flex-fatigue resistance, supporting applications where the component must tolerate repeated deformation without behaving like a rigid thermoplastic.
The 430% elongation at break also demonstrates the material’s ability to tolerate substantial strain.
Tear Resistance
The typical tear strength is approximately:
21 kN/m
This characteristic is particularly important for:
- Thin sealing edges
- Gaskets
- Grommets
- Snap-fit elastomer sections
- Parts exposed to assembly forces
Good tear resistance helps reduce the likelihood that a small cut or notch will rapidly propagate through the flexible component.
Drainage Pipe Seals
One of the most useful long-tail application keywords for Santoprene 6NM901A55/IW BLK is:
drainage pipe seals
Pipe sealing components can require:
- Flexibility
- Compression recovery
- Moisture resistance
- Chemical resistance
- Ozone resistance
- Long-term environmental durability
- Easy high-volume production
With approximately 56 Shore A hardness, Santoprene 6NM901A55/IW BLK provides the soft elastomeric behavior needed for many sealing geometries.
Injection molding also makes it practical for producing complicated sealing shapes with consistent dimensions.
Why Choose Santoprene 6NM901A55/IW BLK?
The primary advantages of Santoprene 6NM901A55/IW BLK are its soft elastomeric behavior and strong environmental resistance.
The grade provides:
- 56 Shore A hardness
- 430% elongation at break
- 4.9 MPa tensile stress at break
- 3.7 MPa stress at 300% strain
- 1.9 MPa stress at 100% strain
- 21 kN/m tear strength
- 23% compression set at 70°C / 22 h
- Good ozone resistance
- Good weathering resistance
- Good UV-aging resistance
- Good chemical resistance
- Good flex-fatigue resistance
- Injection-molding processability
For customers manufacturing drainage pipe seals, construction seals, soft gaskets or other black injection-molded elastomeric components, Santoprene 6NM901A55/IW BLK is a relevant TPV grade to evaluate.
Processing Guidelines for Santoprene 6NM901A55/IW BLK
The primary published processing method for Santoprene 6NM901A55/IW BLK is:
Injection Molding
Pre-Drying
| Processing Parameter | Recommended Condition |
|---|---|
| Drying Temperature | 80°C |
| Drying Time | 3 hours |
| Drying Method | Controlled hot-air or dehumidified drying |
Proper drying helps provide consistent processing and surface quality.
Injection Molding Conditions
| Processing Parameter | Typical Range |
|---|---|
| Rear / Zone 1 Temperature | 155–165°C |
| Middle / Zone 2 Temperature | 165–175°C |
| Front / Zone 3 Temperature | 175–185°C |
| Nozzle Temperature | 180–190°C |
| Mold Temperature | 20–40°C |
| Pre-Drying | 80°C × 3 h |
These are grade-specific processing conditions published for 6NM901A55/IW rather than generic processing settings copied from another Santoprene grade.
Injection Molding Optimization
During production, optimize:
- Injection speed
- Filling pressure
- Holding pressure
- Screw speed
- Back pressure
- Gate size
- Runner size
- Mold venting
- Cooling time
- Part ejection
For flexible TPV components, insufficient venting can lead to:
- Burn marks
- Incomplete filling
- Poor surface quality
Gate and runner dimensions should allow sufficient shear while avoiding unnecessary pressure loss.
Mold Temperature
The published mold-temperature range is:
20–40°C
Mold temperature can affect:
- Surface finish
- Cycle time
- Dimensional stability
- Filling
- Part release
A practical starting point can be chosen within this range and optimized for the actual component geometry.
Melt Temperature Profile
The temperature profile gradually rises through the barrel:
155–165°C → 165–175°C → 175–185°C → 180–190°C nozzle
This progressive profile helps establish a homogeneous melt before injection.
Excessive temperature should be avoided because it may:
- Increase cycle time
- Affect material appearance
- Increase thermal exposure
- Complicate part release
Storage Recommendations
Santoprene 6NM901A55/IW BLK should be stored:
- Indoors
- In original packaging
- With packaging unopened until required
- Away from moisture
- Away from direct sunlight
- Away from excessive heat
After opening, unused material should be protected from contamination and moisture before further processing.
Manufacturing Advantages
Compared with conventional thermoset rubber processing, a TPV can provide manufacturing benefits such as:
- Conventional thermoplastic injection molding
- No separate vulcanization step during part molding
- Shorter processing cycles
- Easier automated production
- Complex molded geometries
- Controlled manufacturing scrap recovery
This is especially useful for high-volume sealing components such as pipe seals and molded gaskets.
Related Products
We supply Santoprene TPV grades for different hardness, sealing, automotive, construction and molding requirements.
Typical product families include:
- Santoprene 6NM Series
- Santoprene black TPV grades
- Santoprene injection-molding grades
- Santoprene sealing grades
- Santoprene gasket materials
- Santoprene building and construction grades
- Santoprene pipe-sealing TPV
- Santoprene ozone-resistant grades
- Santoprene soft TPV grades
View More TPV Thermoplastic Vulcanizates →
For material-selection support, send us your required hardness, sealing application, operating temperature and molding conditions.
Technical Documents for Santoprene 6NM901A55/IW BLK
| Document Type | Description |
|---|---|
| TDS | Physical, mechanical and injection-molding data |
| SDS | Safety Data Sheet |
| Processing Information | Drying and injection-molding guidance |
| Chemical Resistance Information | Application compatibility information |
| Weathering Information | UV, ozone and environmental resistance information |
| COA | Batch-specific quality documentation where available |
Need technical documents for Santoprene 6NM901A55/IW BLK?
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Please state Santoprene 6NM901A55/IW BLK and specify whether you require TDS, SDS, processing information or COA.
FAQ About Santoprene 6NM901A55/IW BLK
Q1: What is Santoprene 6NM901A55/IW BLK?
Santoprene 6NM901A55/IW BLK is a black dynamically vulcanized TPV from Celanese designed primarily for injection-molded flexible sealing and technical components.
Q2: Is Santoprene 6NM901A55/IW BLK the same as Forprene 6NM901A55/IW NERO?
The grade is currently indexed in material databases under the Santoprene 6NM901A55/IW BLK name, while the detailed technical sheet remains available under the earlier Forprene NERO 6NM901A55/IW naming.
Q3: What is the hardness of Santoprene 6NM901A55/IW BLK?
The published value is approximately 56 Shore A.
Q4: What is the density?
The typical density is approximately 0.961 g/cm³.
Q5: What is the tensile strength?
Typical tensile stress at break is approximately 4.9 MPa.
Q6: What is the elongation at break?
Typical elongation at break is approximately 430%.
Q7: What is the stress at 100% elongation?
The typical value is approximately 1.9 MPa.
Q8: What is the stress at 300% elongation?
The typical value is approximately 3.7 MPa.
Q9: What is the tear strength?
Typical tear strength is approximately 21 kN/m.
Q10: What is the compression set?
Published values include approximately 23% at 70°C / 22 h and 43% at 125°C / 70 h.
Q11: Is Santoprene 6NM901A55/IW BLK suitable for seals and gaskets?
Yes. Flexible sealing components are one of the strongest applications for this soft TPV grade.
Q12: Can Santoprene 6NM901A55/IW BLK be used for drainage pipe seals?
Yes. Drainage pipe sealing is one of the specifically published building and construction applications for this material.
Q13: Is the grade resistant to ozone and weathering?
Yes. The material is characterized by strong ozone and weathering resistance for suitable applications.
Q14: Is Santoprene 6NM901A55/IW BLK injection moldable?
Yes. Injection molding is the primary listed processing method.
Q15: Does Santoprene 6NM901A55/IW BLK require drying?
Published guidance recommends approximately 80°C for 3 hours before processing.
Q16: What injection temperatures are recommended?
Typical published settings are:
- Rear: 155–165°C
- Middle: 165–175°C
- Front: 175–185°C
- Nozzle: 180–190°C
- Mold: 20–40°C
Request Santoprene 6NM901A55/IW BLK Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 6NM901A55/IW BLK, please provide:
- Required quantity
- Destination country or port
- Seal / gasket / drainage-pipe application
- Required Shore hardness
- Operating temperature
- Compression-set requirement
- Chemical-contact environment
- Outdoor or UV exposure
- Injection-molding conditions
- Part dimensions
- TDS / SDS requirement
- COA requirement
- Sample requirement, if applicable
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