描述
Santoprene 591-73W175 is a black, UV-stabilized thermoplastic vulcanizate from Celanese developed for architectural glazing, outdoor sealing and precision thin-wall extrusion applications.
The grade belongs to the W175 sealing family and combines relatively high 78 Shore A hardness with substantial elastomeric flexibility.
Current grade-specific values include:
- 78 Shore A hardness
- 0.970 g/cm³ density
- 461% elongation at break
- 8.7 MPa tensile stress at break
- 3.61 MPa stress at 100% elongation
- 33% compression set at 23°C / 70 h
- 46% compression set at 125°C / 70 h
This property balance makes Santoprene 591-73W175 useful where an outdoor sealing profile requires greater firmness and dimensional support while retaining rubber-like flexibility.
The material is specifically designed for thin-wall architectural glazing and sealing applications. Celanese also emphasizes its ability to produce narrow sections with excellent profile definition and long extrusion runs with minimal material build-up.
For more TPV products, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the current Santoprene portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 591-73W175
| Feature | Engineering Benefit |
|---|---|
| 78 Shore A Hardness | Provides a firm but flexible elastomeric sealing response |
| Black Formulation | Suitable for exterior architectural sealing systems |
| UV Stabilized | Supports outdoor exposure and weather-sealing applications |
| 461% Elongation at Break | Provides substantial deformation capability |
| 8.7 MPa Tensile Stress at Break | Provides strong mechanical durability |
| 3.61 MPa Stress at 100% Elongation | Provides firm resistance to deformation |
| Excellent Compression-Set Resistance | Supports long-term sealing applications |
| Architectural Glazing Grade | Specifically designed for glazing and sealing profiles |
| Thin-Wall Extrusion | Supports narrow sealing lips and detailed profile sections |
| 0.33 mm Radius Capability | Enables fine profile geometry |
| Long Extrusion Runs | Designed for stable continuous profile production |
| Low Build-Up | Helps reduce deposits on screens and narrow die sections |
| Shear-Dependent Flow | Apparent melt viscosity decreases as shear increases |
| Coextrusion Capability | Supports selected multi-material profile designs |
| Polyolefin-Based TPV | Combines rubber-like behavior with thermoplastic processing |
Santoprene 591-73W175 is specifically described as capable of extruding thin sections with excellent definition down to approximately 0.33 mm / 0.013 in radius.
Typical Applications for Santoprene 591-73W175
| Application Area | Typical Use |
|---|---|
| Architectural Glazing | Flexible glazing seals and profiles |
| Window Seals | Exterior window weather sealing |
| Door Seals | Flexible weather-resistant sealing profiles |
| Weatherstripping | Outdoor air and moisture sealing |
| Façade Systems | Flexible building-envelope interfaces |
| Glass Sealing Profiles | Seals around architectural glazing systems |
| Building Gaskets | Compression sealing components |
| Thin-Wall Profiles | Detailed flexible sealing lips |
| Construction Profiles | Continuous extruded TPV components |
| Outdoor Equipment | UV-stabilized sealing components |
| Coextruded Profiles | Multi-material sealing structures |
| Consumer Products | Durable black flexible seals |
Celanese places the 591 W175 grades primarily in Building & Construction and Consumer Goods, with outdoor sealing and extrusion as the key positioning.
Typical Properties of Santoprene 591-73W175
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 970 kg/m³ / 0.970 g/cm³ | ISO 1183 |
| Shore A Hardness, 15 s | 78 | ISO 48-4 / ISO 868 |
| Appearance | Black | Manufacturer Information |
| Product Form | Pellets | Manufacturer Information |
| Resin Identification | TPV | ISO 1043 |
| Part Marking Code | >TPV< | ISO 11469 |
| Polymer Base | Polyolefin-Based TPV | Manufacturer Information |
The important point here is that the number 73 in the grade name is not the current measured hardness. Current Celanese data gives 78 Shore A.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Stress at 100% Elongation, Perpendicular | 3.61 MPa | ISO 37 |
| Tensile Stress at Break, Perpendicular | 8.7 MPa | ISO 527-1/-2 or ISO 37 |
| Elongation at Break, Perpendicular | 461% | ISO 527-1/-2 or ISO 37 |
| Compression Set, 23°C / 70 h | 33% | ISO 815 |
| Compression Set, 125°C / 70 h | 46% | ISO 815 |
| Shore A Hardness | 78 | ISO 48-4 / ISO 868 |
Celanese’s portfolio-level Product Finder separately reports a 34% compression-set value at its 70°C reference condition.
UV-Stabilized Outdoor Sealing
A major feature of Santoprene 591-73W175 is its black, UV-stabilized formulation.
Celanese describes the W175 family as providing good UV performance for outdoor sealing, making Santoprene 591-73W175 suitable for components exposed to sunlight and exterior weather.
Typical outdoor environments include:
- Window systems
- Door assemblies
- Architectural glazing
- Exterior façades
- Building weather seals
- Outdoor equipment
- Long-term exterior construction applications
The combination of black pigmentation and UV stabilization makes the grade particularly relevant where the sealing profile remains exposed after installation.
Architectural Glazing Applications
Santoprene 591-73W175 is specifically designed for architectural glazing and sealing applications.
Architectural glazing profiles may need to accommodate:
- Glass movement
- Thermal expansion and contraction
- Building movement
- Wind loading
- Installation tolerances
- Continuous compression
- Moisture
- Outdoor UV exposure
The elastomeric behavior of Santoprene TPV allows the profile to deform as required while its thermoplastic nature enables efficient continuous extrusion.
Precision Thin-Wall Extrusion
One of the strongest differentiating features of Santoprene 591-73W175 is precision extrusion.
Celanese states that the material is designed for thin sections with excellent definition down to approximately 0.33 mm radius.
This is particularly useful for:
- Thin sealing lips
- Fine flexible ribs
- Narrow channels
- Small corners
- Detailed glazing profiles
- Multi-function sealing geometries
For your SEO page, thin-wall extrusion and 0.33 mm profile radius are valuable long-tail search terms because they are genuinely grade-specific.
Long-Run Extrusion Performance
Santoprene 591-73W175 is also designed for long extrusion runs with minimal material build-up on screen packs and narrow die sections.
This can help manufacturers reduce:
- Die-cleaning frequency
- Screen-pack maintenance
- Production interruptions
- Surface defects
- Profile dimensional variation
For window, door and architectural profile manufacturers running continuous extrusion lines, this processing behavior can be a major practical advantage.
Compression-Set Performance
Compression set is critical for sealing profiles because a seal may remain compressed for years after installation.
Santoprene 591-73W175 provides grade-specific compression-set values including:
| Condition | Typical Compression Set |
|---|---|
| 23°C / 70 h | 33% |
| 125°C / 70 h | 46% |
These values help engineers evaluate recovery performance for:
- Glazing seals
- Window seals
- Door gaskets
- Compression profiles
- Building weather seals
Heat-Aging Performance
Current grade-specific data also includes heat-aging results for Santoprene 591-73W175.
| Property | Condition | Typical Change |
|---|---|---|
| Tensile Strength | 150°C / 168 h | -1.0% |
| Tensile Strain at Break | 150°C / 168 h | -8.2% |
| Shore A Hardness | 150°C / 168 h | +0.3 point |
These results show relatively limited change in tensile strength and hardness under the published aging condition.
The data is useful for material evaluation, but 150°C / 168 h aging data should not be interpreted as a universal 150°C continuous-service rating.
Why Choose Santoprene 591-73W175?
The strongest reason to select Santoprene 591-73W175 is the combination of outdoor durability, higher hardness and specialized profile-extrusion performance.
The grade offers:
- 78 Shore A hardness
- 461% elongation
- 8.7 MPa tensile stress at break
- 3.61 MPa stress at 100% elongation
- Black UV-stabilized formulation
- Architectural glazing positioning
- Excellent compression-set resistance
- Thin-wall extrusion capability
- Approximately 0.33 mm radius definition
- Long-run extrusion capability
- Minimal build-up on screens and narrow dies
- Coextrusion capability
- Shear-dependent rheology
For manufacturers producing window seals, door seals, glazing gaskets, façade profiles or precision outdoor weatherstrips, Santoprene 591-73W175 is a highly relevant TPV grade to evaluate.
Processing Guidelines for Santoprene 591-73W175
Current grade-specific Celanese data lists:
- Extrusion
- Sheet Extrusion
- Coextrusion
- Thermoforming
Celanese’s Product Finder additionally describes the grade as general purpose for extrusion and injection molding.
For this grade, however, extrusion should remain the main emphasis because its most distinctive technical advantages concern thin-wall and architectural profile production.
Extrusion Processing
Processors should optimize:
- Barrel temperature profile
- Screw speed
- Melt temperature
- Melt pressure
- Screen-pack configuration
- Adapter temperature
- Die temperature
- Drawdown
- Cooling
- Profile calibration
- Puller speed
- Final dimensions
Special attention should be given to narrow sealing lips and detailed sections because profile definition is one of the main engineering advantages of Santoprene 591-73W175.
Thin-Wall Profile Control
For precision architectural profiles, control:
- Wall thickness
- Sealing-lip thickness
- Die swell
- Drawdown
- Cooling rate
- Line speed
- Tool temperature
- Profile support after the die
The grade’s ability to produce approximately 0.33 mm radius features can be particularly useful for complex glazing and weather-sealing geometries.
Shear-Dependent Flow
Santoprene 591-73W175 is shear dependent.
As shear rate increases, its apparent melt viscosity decreases.
This characteristic supports processing through:
- Narrow die openings
- Fine profile details
- Thin sealing lips
- Complex extrusion tooling
The processor should therefore optimize shear rate together with melt temperature rather than relying only on higher temperature to improve flow.
Coextrusion
Coextrusion is a listed processing route for Santoprene 591-73W175.
Potential constructions include:
- Rigid profile + flexible seal
- Structural carrier + weather-sealing lip
- Flexible dual-function profiles
- Building-envelope seals
- Protective edge profiles
Actual adhesion to the accompanying material should be verified using the specific substrate grade and process conditions.
Surface Appearance & Profile Quality
Architectural profiles may remain visible after installation, so extrusion quality is important.
Typical quality targets include:
- Smooth surface
- Uniform black color
- Sharp profile definition
- Consistent dimensions
- Stable sealing-lip geometry
- Minimal melt fracture
- Low surface contamination
- Reduced die build-up
The W175 formulation is particularly relevant where long continuous production and detailed profile quality are important.
Related Products
We supply Santoprene TPV grades for different outdoor sealing, architectural glazing, extrusion and hardness requirements.
Typical product families include:
- Santoprene 591 W175 Series
- Santoprene UV-stabilized TPV grades
- Santoprene architectural glazing grades
- Santoprene outdoor sealing grades
- Santoprene window and door seal grades
- Santoprene weatherstrip grades
- Santoprene thin-wall extrusion grades
- Santoprene coextrusion grades
- Santoprene building and construction TPV grades
View More TPV Thermoplastic Vulcanizates →
For grade-selection support, send us your profile dimensions, required hardness, outdoor exposure, sealing pressure and extrusion process.
Technical Documents for Santoprene 591-73W175
| Document Type | Description |
|---|---|
| TDS | Physical, mechanical and processing data |
| SDS | Safety Data Sheet |
| UV Information | Outdoor sealing and UV-stabilized application information |
| Extrusion Guide | Thin-wall and profile extrusion guidance |
| Heat Aging Information | 150°C / 168 h property-change data |
| Processing Guide | Extrusion, coextrusion and molding recommendations |
| Santoprene Product Finder | Celanese TPV portfolio information |
| COA | Batch-specific quality information where available |
Need technical documents for Santoprene 591-73W175?
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Please state Santoprene 591-73W175 and specify whether you require TDS, SDS, UV information, extrusion guidance or COA.
FAQ About Santoprene 591-73W175
Q1: What is Santoprene 591-73W175?
Santoprene 591-73W175 is a black UV-stabilized TPV from Celanese designed for architectural glazing, outdoor sealing and precision extrusion applications.
Q2: What is the hardness of Santoprene 591-73W175?
The current published hardness is approximately 78 Shore A.
Q3: Is the “73” in 591-73W175 its actual hardness?
No. Current Celanese data lists 78 Shore A, so the grade number should not be interpreted directly as measured hardness.
Q4: What color is Santoprene 591-73W175?
The grade is supplied as Black.
Q5: Is Santoprene 591-73W175 UV stabilized?
Yes. Celanese lists it as having good UV performance for outdoor sealing.
Q6: What is the density?
The typical density is approximately 0.970 g/cm³.
Q7: What is the elongation at break?
The typical value is approximately 461%.
Q8: What is the tensile stress at break?
The typical value is approximately 8.7 MPa.
Q9: What is the stress at 100% elongation?
The typical grade-specific value is approximately 3.61 MPa.
Q10: What is the compression set?
Published grade-specific values include approximately 33% at 23°C / 70 h and 46% at 125°C / 70 h.
Q11: Is Santoprene 591-73W175 suitable for architectural glazing?
Yes. Architectural glazing and sealing are specifically identified in its current grade description.
Q12: Is Santoprene 591-73W175 suitable for thin-wall extrusion?
Yes. Thin-wall profile extrusion is one of the grade’s main design features.
Q13: How small a profile radius can it produce?
Celanese states that it is designed for profile definition down to approximately 0.33 mm / 0.013 inch radius.
Q14: Is the grade suitable for long extrusion runs?
Yes. Celanese specifically notes long runs with minimal material build-up on screen packs and narrow die sections.
Q15: Can Santoprene 591-73W175 be coextruded?
Yes. Coextrusion is one of the current listed processing methods.
Q16: What heat-aging data is available?
Current grade-specific data includes testing after 150°C for 168 hours, with approximately -1% change in tensile strength, -8.2% change in elongation and +0.3 point change in Shore A hardness.
Request Santoprene 591-73W175 Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 591-73W175, please provide:
- Required quantity
- Destination country or port
- Architectural glazing / window / door / outdoor sealing application
- Required Shore hardness
- Profile dimensions
- Minimum wall or sealing-lip thickness
- Required profile radius
- Outdoor UV requirement
- Compression-set requirement
- Service temperature
- Extrusion or coextrusion process
- Required color
- TDS / SDS requirement
- COA requirement
- Sample requirement, if applicable
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