Santoprene 691-73W175 TPV | 78A Natural Glazing & Sealing TPV

描述

Santoprene 691-73W175 is a natural, colorable thermoplastic vulcanizate from Celanese specifically designed for thin-wall, architectural glazing and sealing applications.

It combines relatively firm 78 Shore A hardness with high elastomeric deformation capability, giving manufacturers a material suitable for flexible profiles that need greater mechanical support while remaining easy to bend, compress and install.

Current Celanese Product Finder values include:

• 78 Shore A hardness
• Natural appearance
• 465% elongation at break
• 8.3 MPa tensile stress at break
• 3.4 MPa tensile stress at 100% elongation
• Extrusion processing
• Injection molding
• Thin-wall glazing and sealing positioning

Unlike the black 591-W175 grades, Santoprene 691-73W175 is supplied in Natural form, which makes it particularly suitable for custom-colored building, glazing and sealing profiles.

The grade is also shear dependent and can be processed using conventional thermoplastic equipment.

Celanese’s grade-specific material information emphasizes four important engineering characteristics:

• Recommended for glazing and sealing
• Excellent thin-wall profile definition
• Excellent ozone resistance
• Excellent flex-fatigue resistance

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 691-73W175

Celanese states that Santoprene 691-73W175 can produce thin sections with excellent definition down to approximately 0.33 mm / 0.013 inch radius.

Typical Applications for Santoprene 691-73W175

Santoprene 691-73W175 is especially suitable for applications requiring natural or custom-colored flexible sealing profiles.

Celanese’s construction application material specifically lists the 691-xxW175 family as colorable extrusion grades with excellent extrudability.

Typical Properties of Santoprene 691-73W175

Physical Properties

The current grade-specific data lists 0.960 g/cm³ density and 78 Shore A hardness.

Mechanical Properties

These are 691-73W175-specific values and should not be replaced with the data from 691-65W175 or 591-73W175.

Natural & Colorable TPV

One of the most important distinctions of Santoprene 691-73W175 is that the standard material is Natural rather than Black.

This makes the grade particularly useful when the finished component requires:

• White profiles
• Gray seals
• Beige architectural seals
• Color-matched window components
• Decorative building profiles
• Custom-colored consumer parts

Colorability can be particularly important in modern architectural systems where seals and flexible profiles are expected to coordinate with:

• Aluminum frames
• Powder-coated structures
• Window systems
• Interior finishing
• Façade colors

Compatible color concentrates should be selected according to the required appearance and outdoor performance.

Architectural Glazing Applications

Santoprene 691-73W175 is specifically designed for architectural glazing and sealing applications.

Glazing profiles may need to accommodate:

• Glass movement
• Thermal expansion
• Building movement
• Wind-induced deformation
• Installation tolerances
• Compression
• Repeated flexing

The combination of 78A hardness and 465% elongation allows the profile to provide mechanical support while still accommodating movement.

Potential components include:

• Glazing gaskets
• Glass retention profiles
• Flexible perimeter seals
• Window profiles
• Door profiles
• Façade sealing components

Precision Thin-Wall Extrusion

One of the strongest grade-specific selling points of Santoprene 691-73W175 is its thin-wall extrusion capability.

Celanese states that the grade is designed for thin sections with excellent definition down to approximately:

0.33 mm / 0.013 inch radius.

This is particularly useful for:

• Thin sealing lips
• Fine flexible ribs
• Narrow profile sections
• Detailed corners
• Small channels
• Multi-function glazing profiles

This is a much stronger SEO differentiator than generic claims such as “good flexibility” or “good weather resistance.”

Long-Run Extrusion Performance

Celanese also designed Santoprene 691-73W175 to maximize extrusion run length while minimizing material build-up on:

• Screen packs
• Narrow die sections
• Detailed tooling surfaces

For manufacturers operating continuous profile lines, this can support:

• Longer production runs
• Less frequent die cleaning
• Fewer process interruptions
• More consistent surface quality
• Better dimensional stability
• Lower maintenance frequency

This processing feature is especially valuable for window, door and architectural profile manufacturers.

Excellent Ozone Resistance

Celanese specifically recommends Santoprene 691-73W175 for applications requiring excellent ozone resistance.

Ozone resistance is important for flexible seals exposed to:

• Outdoor atmosphere
• Electrical equipment
• Industrial environments
• Long-term environmental aging

This characteristic makes the grade suitable for sealing profiles expected to retain flexibility after extended environmental exposure.

Excellent Flex-Fatigue Resistance

Santoprene 691-73W175 is also recommended for applications requiring excellent flex-fatigue resistance.

This is useful for components repeatedly exposed to:

• Bending
• Compression
• Recovery
• Folding
• Installation deformation
• Opening and closing cycles

Examples include window seals, door profiles and flexible glazing components.

Why Choose Santoprene 691-73W175?

The main reason to select Santoprene 691-73W175 is its combination of relatively high hardness, colorability and specialized extrusion performance.

It provides:

• 78 Shore A hardness
• Natural/colorable appearance
• 465% elongation
• 8.3 MPa tensile stress at break
• 3.4 MPa stress at 100% elongation
• Thin-wall profile capability
• Approximately 0.33 mm radius definition
• Architectural glazing suitability
• Excellent ozone resistance
• Excellent flex-fatigue resistance
• Long extrusion runs with reduced build-up
• Shear-dependent melt flow
• Thermoplastic processing

For customers manufacturing natural or custom-colored window seals, glazing gaskets, architectural profiles or precision thin-wall extrusions, Santoprene 691-73W175 is an important grade to evaluate.

Processing Guidelines for Santoprene 691-73W175

Current grade-specific Celanese data lists:

• Extrusion
• Sheet Extrusion
• Coextrusion
• Thermoforming

Celanese’s broader Product Finder additionally lists the grade for extrusion and injection molding.

Drying Conditions

Celanese’s current grade-specific processing notes recommend 3 hours of desiccant drying at 80°C.

Processing Temperature

The current Santoprene 691-73W175 grade sheet gives a broad processing window of approximately 175–230°C.

Actual production settings depend on:

• Screw design
• Extruder size
• Die geometry
• Profile thickness
• Line speed
• Melt pressure
• Cooling
• Surface-quality requirements

Maximum Drawdown

A particularly useful grade-specific processing point is:

Do not exceed approximately 15% drawdown.

This is important when extruding precision:

• Glazing seals
• Thin sealing lips
• Window profiles
• Door profiles
• Detailed architectural sections

Excessive drawdown can distort profile geometry and reduce wall-thickness consistency.

Injection Molding Notes

Although the grade is primarily extrusion oriented, Celanese also provides conventional Santoprene injection-molding guidance.

Published recommendations include:

Back pressure can help maintain homogeneous melt and consistent shot size, particularly when using color masterbatch.

Shear-Dependent Flow

Santoprene 691-73W175 is shear dependent.

Its apparent melt viscosity decreases as shear rate increases.

This characteristic is beneficial for extrusion through:

• Fine die passages
• Thin sealing lips
• Narrow sections
• Complex profile geometries
• Detailed corners

The processor should therefore optimize:

• Screw speed
• Melt pressure
• Die geometry
• Line speed

together with temperature.

Simply increasing melt temperature is not always the most effective way to improve flow.

Extrusion Profile Control

For precision extrusion, important variables include:

• Barrel-zone temperature
• Screw speed
• Melt pressure
• Screen-pack design
• Adapter temperature
• Die temperature
• Drawdown
• Cooling
• Calibration
• Puller speed
• Profile support

These variables directly influence:

• Wall thickness
• Sealing-lip thickness
• Surface finish
• Corner definition
• Dimensional stability

For Santoprene 691-73W175, the grade’s thin-wall capability makes process stability especially important.

Coextrusion

Coextrusion is a listed processing method for Santoprene 691-73W175.

Potential profile designs include:

• Rigid carrier + flexible seal
• Structural profile + sealing lip
• Multi-material window profiles
• Flexible building interfaces
• Protective edge profiles

Actual bonding to another polymer depends on the exact substrate and extrusion conditions and should be tested before production.

Material Compatibility

Celanese processing guidance states that Santoprene TPV is incompatible with:

• Acetal / POM
• PVC

Processing equipment should therefore be thoroughly purged when changing between these materials and Santoprene 691-73W175.

Manufacturing-Stream Recyclability

Santoprene 691-73W175 is polyolefin based and described by Celanese as recyclable within the manufacturing stream.

Controlled clean process material may include:

• Start-up scrap
• Trim
• Profile cut-offs
• Selected clean extrusion scrap

Regrind levels should be controlled according to required:

• Mechanical properties
• Appearance
• Color consistency
• Profile dimensions

Related Products

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

Typical Santoprene product families include:

• Santoprene 691 W175 Series
• Santoprene natural TPV grades
• Santoprene colorable TPV grades
• Santoprene architectural glazing grades
• Santoprene thin-wall extrusion grades
• Santoprene window and door seal grades
• Santoprene building and construction grades
• Santoprene profile extrusion grades
• Santoprene flexible sealing grades

View More TPV Thermoplastic Vulcanizates →

For grade-selection support, send us your required hardness, color, profile dimensions, sealing application and processing method.

Technical Documents for Santoprene 691-73W175

Need technical documents for Santoprene 691-73W175?

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Please state Santoprene 691-73W175 and specify whether you require TDS, SDS, extrusion guidance or other technical documentation.

FAQ About Santoprene 691-73W175

Q1: What is Santoprene 691-73W175?

Santoprene 691-73W175 is a natural, colorable TPV from Celanese designed for thin-wall architectural glazing, sealing and profile extrusion applications.

Q2: What is the hardness of Santoprene 691-73W175?

Current Celanese data gives approximately 78 Shore A.

Q3: Is the “73” in Santoprene 691-73W175 its actual hardness?

No. The current measured hardness published by Celanese is 78 Shore A.

Q4: What color is Santoprene 691-73W175?

The standard material is Natural, making it suitable for custom coloring.

Q5: What is the density?

The current grade-specific value is approximately 0.960 g/cm³.

Q6: What is the elongation at break?

The current typical value is approximately 465%.

Q7: What is the tensile stress at break?

The typical value is approximately 8.3 MPa.

Q8: What is the stress at 100% elongation?

The typical value is approximately 3.4 MPa.

Q9: Is Santoprene 691-73W175 suitable for architectural glazing?

Yes. Celanese specifically identifies it for thin-wall, glazing and sealing applications.

Q10: Is Santoprene 691-73W175 suitable for thin-wall extrusion?

Yes. Thin-wall profile extrusion is one of the main grade-specific features.

Q11: How small a profile radius can Santoprene 691-73W175 produce?

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

Q12: Is Santoprene 691-73W175 suitable for long extrusion runs?

Yes. Celanese specifically designed it to maximize run length with minimal material build-up on screen packs and narrow die sections.

Q13: Does Santoprene 691-73W175 have good ozone resistance?

Yes. Excellent ozone resistance is specifically listed among its key features.

Q14: Does it have good flex-fatigue resistance?

Yes. Celanese recommends the grade for applications requiring excellent flex-fatigue resistance.

Q15: What drying condition is recommended?

Current grade-specific guidance recommends approximately 80°C for 3 hours using a desiccant dryer.

Q16: What is the processing temperature range?

Current Celanese processing guidance gives approximately 175–230°C.

Request Santoprene 691-73W175 Price & Technical Support

For pricing, availability, technical documents or application support for Santoprene 691-73W175, please provide:

• Required quantity
• Destination country or port
• Architectural glazing / window / door / sealing application
• Required Shore hardness
• Required color
• Profile dimensions
• Minimum wall thickness
• Minimum sealing-lip thickness
• Required profile radius
• Extrusion or injection-molding process
• Ozone-resistance requirement
• Flex-fatigue requirement
• Service temperature
• TDS / SDS requirement
• COA requirement
• Sample requirement, if applicable

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