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EP50BK00-OR-2.5X21
CS

0.098 in

(2.50 mm)

ID

0.827 in

(21.00 mm)

ORing cut reference

EPDM EP50BK00 O-Ring, Size: 2.5X21

Material: EPDM EP50BK00 O-Ring

Size: Metric 2.5X21 O-Ring

Part Number: EP50BK00-OR-2.5X21

EP50BK00

EPDM (EPR, EPM)

50

Shore A

Peroxide Cured

General Purpose Material

Color: Black

Detailed Description

EP50BK00-OR-2.5X21 is a Black, 50 Shore A, Peroxide Cured EPDM (EPR, EPM) O-Ring. EP50BK00 is manufactured with the following features & specifications: General Purpose Material. EP50BK00-OR-2.5X21 is Metric size 2.5X21 O-Ring also referred to as 2.5mm (Cross Sectional Diameter (CS)) x 21mm (Inside Diameter (ID)).


Material: EPDM EP50BK00 O-Ring


Size: Metric 2.5X21, 2.50mm CS X 21.00mm ID (0.098" CS X 0.827" ID)

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Technical SpecificationValue
Compound NumberEP50BK00
MaterialEPDM (EPR, EPM)
CurePeroxide Cured
ColorBlack
Durometer50 Shore A
High Temperature150 °C / 302 °F
Low Temperature-55 °C / -67 °F
Geometry Specifications
Cross Sectional GeometryO-Ring
Size StandardMetric
Size2.5X21
Cross Section (CS)2.50 mm / 0.098 in
Inside Diameter (ID)21.00 mm / 0.827 in
ORing cut reference

Canyon’s EP50BK00 is a 50 Shore A black EPDM compound that is peroxide cured for improved thermal stability, aging resistance, and long-term sealing performance. Designed as a cost-effective, general-purpose material, it offers excellent resistance to weathering, ozone, and environmental exposure while maintaining good heat and abrasion resistance. With a service temperature range of -57°C to 150°C (-70°F to 300°F), EP50BK00 remains flexible at low temperatures and stable under moderate heat. Its low compression set and high elongation make it well suited for static and light dynamic sealing applications where softness and conformability are important.

EP50BK00 meets ASTM D2000 2DA510 requirements and provides consistent mechanical performance for industrial, HVAC, water handling, and general equipment sealing applications. This EPDM formulation is commonly selected where durability, affordability, and environmental resistance are required without exposure to petroleum-based oils or fuels. Canyon Components offers equivalent EPDM materials tailored for specific temperature, chemical, and compliance needs. Compare to common Parker EPDM compounds used in similar applications.

Common relevant keywords:
EPDM, Ethylene Propylene Rubber, Peroxide Cured EPDM, 50 Shore A EPDM, Black EPDM, EPDM O-rings, EPDM Gaskets, Weather Resistant Rubber, Ozone Resistant Elastomers, Heat Resistant EPDM, Low Compression Set EPDM, Industrial EPDM Seals, Parker EPDM Equivalent, Datasheet, TDS, Test Report, MTR, MSDS, SDS