Santoprene 591-56W175 TPV | UV Stabilized 62A Outdoor Sealing TPV

描述

Santoprene 591-56W175 is a soft, black thermoplastic vulcanizate from Celanese engineered primarily for architectural glazing, outdoor sealing and precision thin-wall extrusion applications.

The grade is part of the Santoprene W175 family and is particularly useful where an extruded elastomeric profile must combine:

• Outdoor UV resistance
• Flexible sealing performance
• Excellent profile definition
• Thin-wall capability
• Long production runs
• Low die and screen-pack build-up
• Compression-set resistance
• Thermoplastic processability

Celanese’s current Product Finder lists Santoprene 591-56W175 at approximately 62 Shore A, black in color, with 439% elongation at break, 5.3 MPa tensile strength and 2.1 MPa tensile stress at 100% elongation. It is specifically described as having good UV performance for outdoor sealing.

The latest grade-specific Celanese Materials Database gives more precise values:

• 61.5 Shore A hardness
• 0.970 g/cm³ density
• 2.08 MPa stress at 100% elongation
• 5.33 MPa tensile stress at break
• 439% elongation at break
• 27% compression set at 100°C / 24 h
• 43% compression set at 125°C / 70 h

One of the most distinctive features of Santoprene 591-56W175 is its extrusion behavior.

Celanese states that the material is designed to extrude thin sections with excellent definition down to approximately 0.33 mm radius, while enabling long production runs with minimal material build-up on screen packs or narrow die sections.

This makes the grade particularly relevant to architectural and building profiles where fine lips, corners and narrow sealing geometries need to be produced consistently.

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 591-56W175

The strongest SEO and technical positioning for Santoprene 591-56W175 is therefore UV-stabilized architectural glazing and thin-wall outdoor sealing, rather than simply describing it as a general-purpose TPV.

Typical Applications for Santoprene 591-56W175

Santoprene 591-56W175 is especially suitable for building, construction and consumer applications requiring weather-resistant flexible profiles.

Celanese’s Product Finder identifies the grade primarily in building & construction and consumer goods, with UV stabilization and extrusion processing highlighted.

Typical Properties of Santoprene 591-56W175

Physical Properties

The 2025 grade-specific database gives 61.5 Shore A, while Celanese’s portfolio-level Product Finder rounds the grade to 62 Shore A. Both refer to the same material.

Mechanical Properties

These properties support the use of Santoprene 591-56W175 in flexible sealing systems where a soft material must maintain useful mechanical strength and elastic recovery.

UV-Stabilized Outdoor Sealing Performance

One of the most important features of Santoprene 591-56W175 is its outdoor-sealing positioning.

Celanese explicitly lists the grade as UV stabilized and describes it as having good UV performance for outdoor sealing.

This makes the material relevant to:

• Exterior glazing
• Window and door systems
• Outdoor sealing profiles
• Weatherstrips
• Building-envelope interfaces
• Exterior equipment seals
• Consumer products exposed to sunlight

The black formulation is also particularly appropriate for exterior sealing systems where long-term appearance and weather resistance are important.

Architectural Glazing Applications

Santoprene 591-56W175 is specifically designed for architectural glazing and sealing applications.

In architectural glazing, flexible seals may need to accommodate:

• Glass movement
• Thermal expansion and contraction
• Wind-induced movement
• Assembly tolerances
• Repeated compression
• Weather exposure
• UV radiation

Santoprene TPV allows manufacturers to produce these sealing profiles using thermoplastic extrusion rather than conventional vulcanized-rubber processing.

That can support:

• Continuous extrusion
• Coextrusion
• Consistent profile geometry
• Scrap recovery within controlled manufacturing streams
• Efficient high-volume production

Precision Thin-Wall Extrusion

A particularly important selling point of Santoprene 591-56W175 is its ability to produce thin, detailed extrusion geometries.

Celanese states that it is designed to extrude thin sections with excellent definition down to approximately 0.33 mm (0.013 inch) radius.

This is valuable for:

• Fine sealing lips
• Small flexible ribs
• Precision corners
• Narrow profile sections
• Complex glazing seals
• Detailed weatherstrip geometries

For customers producing highly detailed extruded profiles, this should be one of the main grade-selection keywords on the page.

Long-Run Extrusion Performance

Celanese also states that Santoprene 591-56W175 is designed for long extrusion runs with minimal material build-up on screen packs or narrow die sections.

This can help manufacturers seeking:

• Longer uninterrupted production
• Reduced die cleaning frequency
• Better profile consistency
• Reduced process interruptions
• More stable narrow-section extrusion
• Cleaner continuous profile production

This feature is particularly relevant to architectural profile manufacturers where long continuous runs are common.

Compression-Set Resistance

The current grade description specifically highlights excellent resistance to compression set.

Grade-specific values include:

Compression-set resistance is important in sealing applications because a seal must recover after being compressed.

Typical examples include:

• Window seals
• Door seals
• Glazing profiles
• Compression gaskets
• Weatherstripping
• Flexible contact seals

Heat-Aging Performance

Santoprene 591-56W175 also has grade-specific heat-aging data.

These values are published in the current Celanese Materials Database.

This information can be useful when evaluating the material for components that may experience occasional elevated-temperature exposure.

It should not, however, be interpreted as a universal continuous-service temperature of 150°C.

Why Choose Santoprene 591-56W175?

The main reason to select Santoprene 591-56W175 is the combination of outdoor durability and specialized extrusion behavior.

The grade provides:

• Black UV-stabilized formulation
• Approximately 62 Shore A hardness
• Excellent compression-set resistance
• 439% elongation
• 5.33 MPa tensile stress at break
• Architectural glazing positioning
• Thin-wall extrusion capability
• Fine profile definition
• Long-run extrusion performance
• Reduced material build-up
• Coextrusion capability
• Shear-dependent processing behavior

For manufacturers producing window seals, architectural glazing profiles, outdoor weatherstrips or precision thin-wall extrusions, Santoprene 591-56W175 is an important grade to evaluate.

Processing Guidelines for Santoprene 591-56W175

The latest grade-specific Celanese Materials Database lists:

• Extrusion
• Sheet extrusion
• Coextrusion
• Thermoforming

Celanese’s broader Product Finder additionally describes it as a general-purpose grade for extrusion and injection molding.

For this particular grade, extrusion should remain the primary processing focus because its main engineering advantages are tied directly to profile extrusion.

Drying Conditions

Celanese recommends 3 hours of desiccant drying at approximately 80°C before processing.

General Processing Temperature

The current grade sheet gives a broad processing window of approximately 175–230°C.

Actual extrusion settings should be optimized for:

• Screw design
• Profile thickness
• Line speed
• Die geometry
• Melt pressure
• Surface finish
• Cooling conditions
• Draw-down ratio

Extrusion Processing

Because Santoprene 591-56W175 is primarily designed for precision extrusion, particular attention should be paid to:

• Barrel temperature profile
• Screw speed
• Melt temperature
• Head pressure
• Screen pack condition
• Adapter temperature
• Die temperature
• Draw-down
• Profile support
• Cooling rate
• Line speed

Celanese specifically states that the grade is designed for narrow die sections and long continuous runs with minimal build-up.

Maximum Drawdown

Celanese’s current processing notes state:

Do not exceed 15% drawdown.

This point is particularly important for dimensional control in precision seals and glazing profiles.

Shear-Dependent Flow

Santoprene 591-56W175 is explicitly described as a shear-dependent TPV.

As processing shear increases, apparent melt viscosity decreases.

This behavior helps support:

• Fine profile filling
• Narrow extrusion sections
• Thin sealing lips
• Detailed geometry
• Smooth continuous processing

For extrusion trials, shear rate and die design can therefore have a major impact on flow behavior and final profile quality.

Injection Molding Notes

Although the current grade characteristics emphasize extrusion, Celanese also includes generic injection-molding guidance in the grade sheet.

Published guidance includes:

• Holding pressure around 50–75% of actual injection pressure
• Screw speed approximately 100–200 rpm
• Back pressure around 0.3–0.7 MPa when needed for melt homogeneity and shot consistency

For applications centered on architectural seals and precision profiles, extrusion remains the more important processing route.

Material Compatibility

Celanese states that Santoprene TPV has a wide processing window but is incompatible with acetal (POM) and PVC.

Processing equipment should therefore be thoroughly purged when changing between these polymers and Santoprene 591-56W175.

Related Products

We supply Santoprene TPV grades for different outdoor sealing, architectural, extrusion and hardness requirements.

Typical Santoprene product families include:

• Santoprene 591 W175 Series
• Santoprene UV-stabilized TPV grades
• Santoprene architectural glazing grades
• Santoprene outdoor sealing grades
• Santoprene weatherstrip grades
• Santoprene thin-wall extrusion grades
• Santoprene profile extrusion grades
• Santoprene coextrusion grades
• Santoprene building and construction TPV grades

View More TPV Thermoplastic Vulcanizates →

For grade-selection support, send us your required hardness, profile geometry, outdoor exposure and extrusion conditions.

Technical Documents for Santoprene 591-56W175

Need technical documents for Santoprene 591-56W175?

📧 Email: ruiqingchem@gmail.com

📝 Online form: Contact Us →

Please state Santoprene 591-56W175 and specify whether you require TDS, SDS, UV information, extrusion guidance or COA.

FAQ About Santoprene 591-56W175

Q1: What is Santoprene 591-56W175?

Santoprene 591-56W175 is a soft, black, UV-stabilized TPV from Celanese designed especially for thin-wall extrusion, architectural glazing and outdoor sealing applications.

Q2: What is the hardness of Santoprene 591-56W175?

The current grade-specific value is 61.5 Shore A, while Celanese’s Product Finder rounds the grade to 62 Shore A.

Q3: Is the “56” in 591-56W175 the actual hardness?

No. The current published hardness is approximately 61.5–62 Shore A, not 56 Shore A.

Q4: What color is Santoprene 591-56W175?

The grade is supplied as Black.

Q5: Is Santoprene 591-56W175 UV stabilized?

Yes. Celanese’s Product Finder identifies this grade as UV stabilized and suitable for outdoor sealing.

Q6: What is the density?

The current grade-specific value is approximately 0.970 g/cm³.

Q7: What is the elongation at break?

Typical elongation at break is approximately 439%.

Q8: What is the tensile stress at break?

Typical tensile stress at break is approximately 5.33 MPa.

Q9: What is the stress at 100% elongation?

The typical value is approximately 2.08 MPa.

Q10: Is Santoprene 591-56W175 suitable for architectural glazing?

Yes. Architectural glazing and sealing are specifically listed in Celanese’s current grade description.

Q11: Is it suitable for thin-wall extrusion?

Yes. Celanese specifically designed this grade for thin sections with excellent definition.

Q12: How small a profile radius can it reproduce?

Celanese states that the grade can produce excellent definition down to approximately 0.33 mm / 0.013 inch radius.

Q13: Is Santoprene 591-56W175 suitable for long extrusion runs?

Yes. Celanese states that it is designed for long runs with minimal material build-up on screen packs or narrow die sections.

Q14: What is the compression set?

Current grade-specific data lists approximately 27% at 100°C / 24 h and 43% at 125°C / 70 h.

Q15: Does Santoprene 591-56W175 require drying?

Celanese recommends approximately 80°C for 3 hours using desiccant drying.

Q16: What is the processing-temperature window?

Celanese lists a broad processing window of approximately 175–230°C.

Request Santoprene 591-56W175 Price & Technical Support

For pricing, availability, technical documents or application support for Santoprene 591-56W175, please provide:

• Required quantity
• Destination country or port
• Architectural glazing / window / door / outdoor sealing application
• Required Shore hardness
• Profile dimensions
• Minimum wall or lip thickness
• Required radius
• UV / weathering requirement
• Service temperature
• Extrusion or coextrusion process
• Expected line speed
• Required color
• TDS / SDS requirement
• COA requirement
• Sample requirement, if applicable

📧 Email: ruiqingchem@gmail.com

📝 Send Inquiry →