描述
Santoprene 241-73W236 is a soft, colorable specialty thermoplastic vulcanizate from Celanese developed for plumbing applications in contact with potable water. The grade is specifically certified to NSF/ANSI Standard 61: Drinking Water System Components – Health Effects.
The material has a typical hardness of approximately 79 Shore A, giving it a firmer elastomeric response suitable for seals, fittings, connectors and other water-system components requiring both flexibility and dimensional support.
Current Celanese-derived data lists approximately 490% elongation at break, 8.8 MPa tensile stress at break and approximately 3.6 MPa tensile stress at 100% elongation.
A key differentiating feature of the W236 formulation is its stabilization system for protection against copper and other metal-catalyzed degradation. This is particularly relevant in plumbing and potable-water systems where elastomeric components may operate in close proximity to copper or other metals.
Santoprene 241-73W236 is a shear-dependent TPV and can be processed on conventional thermoplastic equipment using injection molding, extrusion, blow molding, thermoforming or vacuum forming.
The material is polyolefin based and recyclable within the manufacturing stream.
For more TPV products, visit our TPV Thermoplastic Vulcanizates Product Category →.
For the current Celanese TPV portfolio, see the Official Celanese Santoprene & Geolast Product Finder →.
Key Features of Santoprene 241-73W236
| Feature | Engineering Benefit |
|---|---|
| 79 Shore A Hardness | Provides firmer elastomeric support for plumbing and sealing components |
| Natural / Colorable | Supports customized product colors |
| NSF/ANSI 61 Certified | Suitable for selected potable-water-contact applications |
| 490% Elongation at Break | Maintains high deformation capability |
| 8.8 MPa Tensile Stress at Break | Provides useful mechanical strength |
| 3.6 MPa Stress at 100% Elongation | Supports firm but flexible sealing behavior |
| Copper/Metal Stabilized | Helps resist copper- and metal-catalyzed degradation |
| Shear-Dependent TPV | Flow can be optimized through processing shear |
| Injection Moldable | Suitable for complex plumbing and sealing components |
| Extrudable | Suitable for profiles and continuous sections |
| Blow Moldable | Supports selected hollow components |
| Thermoformable / Vacuum Formable | Broadens part-design options |
| Polyolefin Based | Combines elastomeric durability with thermoplastic processability |
| Manufacturing-Stream Recyclability | Controlled scrap can be reworked |
The strongest reason to select Santoprene 241-73W236 is its combination of potable-water certification and resistance to copper/metal-catalyzed degradation.
Typical Applications for Santoprene 241-73W236
Santoprene 241-73W236 is particularly relevant to potable-water and plumbing applications.
| Application Area | Typical Use |
|---|---|
| Potable-Water Systems | Elastomeric components exposed to drinking water |
| Plumbing Fittings | Flexible sealing and interface components |
| Seals & Gaskets | Potable-water sealing applications |
| Valve Components | Flexible sealing elements |
| Connectors | Water-system flexible connectors |
| Extruded Profiles | Plumbing and sealing profiles |
| Flexible Housings | Protective water-system components |
| Grommets | Mechanical protection and sealing |
| Appliance Water Systems | Water-contact flexible parts |
| Industrial Water Equipment | Elastomeric components in compatible water systems |
| Copper-Adjacent Components | Applications where metal-catalyzed aging is a concern |
NSF currently lists Santoprene 241-73W236 TPV among potable-water materials for fitting and appurtenance use, with application-specific surface-area-to-volume limits.
Typical Properties of Santoprene 241-73W236
Physical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Density | 970 kg/m³ / 0.970 g/cm³ | ISO 1183 |
| Shore A Hardness, 15 s | 79 | ISO 48-4 / ISO 868 |
| Resin Identification | TPV | ISO 1043 |
| Part Marking Code | >TPV< | ISO 11469 |
| Appearance | Natural / Colorable | Manufacturer information |
| Product Form | Pellets | Manufacturer information |
Current Celanese Materials Database data lists approximately 0.970 g/cm³ density and 79 Shore A hardness.
Mechanical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Tensile Stress at 100% Elongation | 3.6 MPa | ISO 37 |
| Tensile Stress at Break | 8.8 MPa | ISO 527-1/-2 or ISO 37 |
| Elongation at Break | 490% | ISO 527-1/-2 or ISO 37 |
| Compression Set, 23°C | 25% | ISO 815 |
These values show that Santoprene 241-73W236 provides a useful balance of firmness, tensile strength and high elongation.
NSF/ANSI 61 Potable Water Certification
One of the most important reasons to specify Santoprene 241-73W236 is its NSF/ANSI 61 certification for drinking-water system components.
NSF’s current listing includes Santoprene 241-73W236 as a potable-water material. The listing identifies fitting/appurtenance end uses and publishes specific surface-area-to-volume restrictions, which should be checked for the actual component design.
This makes the grade relevant for:
- Drinking-water fittings
- Plumbing seals
- Water-system gaskets
- Valve components
- Connectors
- Appliance water-system parts
- Potable-water handling equipment
W236 Copper and Metal Stabilization
The W236 designation is particularly important.
Celanese states that Santoprene 241-73W236 contains a stabilization system that protects against copper and other metal-catalyzed degradation.
This is useful in plumbing applications because elastomeric parts may operate near:
- Copper tubing
- Brass fittings
- Metal valves
- Metallic plumbing assemblies
- Water-contact metal interfaces
Metal ions and heat can accelerate degradation in some polymer systems, so this stabilization package is one of the grade’s most relevant application features.
Processing Guidelines for Santoprene 241-73W236
Santoprene 241-73W236 can be processed on conventional thermoplastic equipment.
Published processing methods include:
- Injection molding
- Extrusion
- Blow molding
- Thermoforming
- Vacuum forming
Injection Molding Conditions
| Processing Parameter | Published Guidance |
|---|---|
| Drying Temperature | 82°C |
| Drying Time | 3 hours |
| Suggested Maximum Moisture | 0.08% |
| Suggested Maximum Regrind | 20% |
| Rear Zone | 177°C |
| Middle Zone | 182°C |
| Front Zone | 188°C |
| Nozzle Temperature | 193–227°C |
| Processing Melt Temperature | 199–232°C |
| Mold Temperature | 10–52°C |
| Injection Rate | Fast |
| Back Pressure | 0.345–0.689 MPa |
| Screw Speed | 100–200 rpm |
| Vent Depth | 0.025 mm |
These grade-specific injection values are published in Santoprene 241-73W236 processing data.
Extrusion Conditions
| Processing Parameter | Published Guidance |
|---|---|
| Drying Temperature | 82°C |
| Drying Time | 3 hours |
| Melt Temperature Reference | 202°C |
Celanese Materials Database data gives approximately 202°C as the extrusion melt-temperature reference.
General Santoprene Processing Window
Celanese recommends desiccant drying for approximately 3 hours at 80–82°C.
The broader Santoprene TPV processing window is approximately 175–230°C.
Shear-Dependent Flow
Santoprene 241-73W236 is a shear-dependent TPV.
Processors should optimize:
- Screw speed
- Injection speed
- Back pressure
- Gate design
- Melt temperature
- Mold temperature
- Venting
- Cooling time
- Die geometry
- Draw-down
- Surface finish
Material Compatibility
Celanese processing notes state that Santoprene TPV is incompatible with acetal (POM) and PVC.
Equipment should be thoroughly purged when changing between these materials and Santoprene 241-73W236.
Why Choose Santoprene 241-73W236?
The main reason to choose Santoprene 241-73W236 is its specialization for potable-water plumbing applications.
Its 79 Shore A hardness provides a firmer elastomeric response suitable for seals, fittings and flexible plumbing components.
Approximately 490% elongation at break allows substantial deformation.
The typical 8.8 MPa tensile stress at break provides useful mechanical strength.
Its NSF/ANSI 61 certification supports potable-water material selection.
The W236 stabilization system provides additional protection against degradation associated with copper and other metals, an especially relevant consideration in plumbing assemblies.
Broad thermoplastic processability also allows the grade to be molded, extruded or formed without conventional rubber vulcanization.
For customers requiring a 79A natural TPV for potable-water service with metal-catalyzed degradation stabilization, Santoprene 241-73W236 is an important grade to evaluate.
Related Products
We supply Santoprene TPV grades for different potable-water, food-contact, hardness and processing requirements.
Typical product families include:
- Santoprene 241 Series
- Santoprene potable-water grades
- Santoprene metal-stabilized W236 grades
- Santoprene food and water grades
- Santoprene plumbing grades
- Santoprene sealing grades
- Santoprene specialty TPV grades
View More TPV Thermoplastic Vulcanizates →
If you are unsure which grade fits your application, send us your potable-water requirement, hardness, metal-contact environment, processing method and service temperature.
Technical Documents for Santoprene 241-73W236
| Document Type | Description |
|---|---|
| TDS | Current physical, mechanical and processing data |
| SDS | Safety Data Sheet |
| NSF 61 Information | Drinking-water system component certification |
| Processing Guide | Injection molding and extrusion information |
| Santoprene Product Finder | Celanese grade portfolio and positioning |
| COA | Batch-specific quality information where available |
Need technical documents for Santoprene 241-73W236?
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Please state Santoprene 241-73W236 and whether you require TDS, SDS, NSF documentation or other technical information.
FAQ About Santoprene 241-73W236
Q1: What is Santoprene 241-73W236?
Santoprene 241-73W236 is a natural, colorable specialty TPV from Celanese designed for plumbing applications in contact with potable water.
Q2: What is the hardness of Santoprene 241-73W236?
The typical hardness is approximately 79 Shore A.
Q3: Is Santoprene 241-73W236 NSF 61 certified?
Yes. The grade is certified to NSF/ANSI Standard 61 for drinking-water system components.
Q4: What does W236 mean?
W236 identifies a formulation containing a stabilization system designed to protect against copper and other metal-catalyzed degradation.
Q5: What is the elongation at break?
The typical value is approximately 490%.
Q6: What is the tensile stress at break?
The typical value is approximately 8.8 MPa.
Q7: What is the tensile stress at 100% elongation?
The typical value is approximately 3.6 MPa.
Q8: What is the density?
The typical density is approximately 0.970 g/cm³.
Q9: What is the compression set?
Current Celanese Materials Database data lists approximately 25% compression set at 23°C under the published test condition.
Q10: Can Santoprene 241-73W236 be used with copper plumbing?
The grade is specifically stabilized against copper and other metal-catalyzed degradation, making this one of its key intended application advantages.
Q11: Can Santoprene 241-73W236 be injection molded?
Yes. Injection molding is a supported processing method.
Q12: Can Santoprene 241-73W236 be extruded?
Yes. Extrusion is a supported processing method, with a published melt-temperature reference around 202°C.
Q13: Can it be blow molded?
Yes. Blow molding is listed among the suitable processes.
Q14: Does Santoprene 241-73W236 need drying?
Published guidance recommends approximately 82°C for 3 hours.
Q15: What injection melt temperature is recommended?
Grade-specific injection data gives approximately 199–232°C processing melt temperature.
Q16: What mold temperature is recommended?
Published injection guidance gives approximately 10–52°C.
Request Santoprene 241-73W236 Price & Technical Support
For pricing, availability, technical documents or application support for Santoprene 241-73W236, please provide:
- Required quantity
- Destination country or port
- Potable-water or plumbing application
- Seal, gasket, fitting, connector or profile design
- Required hardness
- Required color
- Copper or other metal contact
- Water-contact temperature
- Continuous and peak operating temperature
- Chemical or cleaning-agent exposure
- Injection-molding or extrusion process
- NSF documentation requirement
- TDS, SDS or COA requirement
- Sample requirement, if applicable
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