Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.157 in
(4.00 mm)
15.945 in
(405.00 mm)
EPDM EP70BK26 O-Ring, Size: 4X405
Material: EPDM EP70BK26 O-Ring
Size: Metric 4X405 O-Ring
Part Number: EP70BK26-OR-4X405
EP70BK26
EPDM (EPR, EPM)
70
Shore A
PTFE Filled
Sulfur Cured
Color: Black
Detailed Description
EP70BK26-OR-4X405 is a Black, 70 Shore A, Sulfur Cured EPDM (EPR, EPM) O-Ring. It is a 70 durometer EPDM (EPR, EPM). EP70BK26 is manufactured with the following features & specifications: PTFE Filled. EP70BK26-OR-4X405 is Metric size 4X405 O-Ring also referred to as 4mm (Cross Sectional Diameter (CS)) x 405mm (Inside Diameter (ID)). Material: 70 Durometer EPDM EP70BK26 O-Ring Size: Metric 4X405, 4mm CS X 405mm ID (0.157" CS X 15.945" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | EP70BK26 |
| Material | EPDM (EPR, EPM) |
| Cure | Sulfur Cured |
| Color | Black |
| Durometer | 70 Shore A Hardness |
| High Temperature | 130 °C / 266 °F |
| Low Temperature | -55 °C / -67 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 4X405 |
| Cross Section (CS) | 4.00 mm / 0.157 in |
| Inside Diameter (ID) | 405.00 mm / 15.945 in |
Canyon’s EP70BK26 is a 70 Shore A black EPDM compound that is sulfur cured and internally filled with PTFE to enhance lubricity and reduce installation friction. This formulation delivers reliable environmental resistance with good heat stability, abrasion resistance, and low compression set, making it well suited for general-purpose sealing where smoother assembly and reduced stick-slip are desired. With a service temperature range of -55°C to 130°C (-67°F to 266°F), EP70BK26 maintains flexibility and sealing integrity across common industrial operating conditions. The PTFE-filled design supports improved performance in dynamic or sliding interfaces compared to unfilled EPDM grades.
EP70BK26 meets ASTM D2000 M2BA707 requirements and is commonly used in industrial equipment, enclosures, and applications where weathering resistance and easier installation are priorities. Its balanced mechanical properties provide dependable performance in static and light dynamic seals without the cost of specialty elastomers. Canyon Components offers additional EPDM formulations with alternative cure systems and fillers to meet specific friction, temperature, and compliance needs.
Common relevant keywords:
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