30" to 36" ID X 0.313" (8.00mm) C/S EPDM 70 Custom Vulcanized O-Ring

762mm ID to 914mm ID / 30" to 36" ID

EPDM 70 Durometer Custom Vulcanized O-Ring

Solve your unique sealing challenges with The O-Ring Store LLC’s Custom Vulcanized EPDM 70 O-Rings. When standard molded O-Rings don’t fit the application or lead times are too long, our vulcanized O-Rings deliver fast, flexible, and reliable sealing solutions. Expertly crafted from extruded EPDM O-Ring cord and vulcanized for a seamless finish, these O-Rings are available in custom sizes and dimensions to meet the most demanding requirements.

Olypsys® Measurement Verification & Quality Assurance

Every vulcanized O-Ring we produce includes a certified Olypsys® Measurement Verification Report, verifying exact ID, OD, and cross-section accuracy for traceable quality assurance. This process ensures precision, trust, and reliability in every seal we manufacture. Customers can rely on our Olypsys-certified measurement data as part of our ISO9001:2015 quality system, reinforcing confidence in every order.

Current Lead Times

Dependent on cord stock availability

• Up to 24 O-Rings: Current Lead Time ~2–5 Days ARO
• 25–100 O-Rings: Current Lead Time ~5–10 Days ARO
• 100+ O-Rings: Current Lead Time ~10–15 Days ARO

Operating temperature: -65°F to +300°F (-54°C to +149°C)

Material & Performance Details

EPDM (Ethylene Propylene Diene Monomer) offers outstanding resistance to water, steam, brake fluids, and weathering. This 70-durometer black compound provides excellent flexibility, ozone resistance, and long-term durability in outdoor and dynamic sealing environments.

Excellent resistance to:

• Water and steam
• Glycol-based brake fluids
• Alcohols and ketones
• Phosphate-ester hydraulic fluids
• Weathering, ozone, and UV exposure

Limited capability with:

• Petroleum oils and fuels

Not compatible with:

• Mineral oils, greases, and hydrocarbons

Sizes & Measurements

• Cross Section (CS): 1.78 mm (0.070 in)
• Inside Diameter (ID): Custom to specification
• Outside Diameter (OD): Custom to specification
• AS568 Dash: Not applicable (custom size)

Applications & Use Cases

Ideal for environments exposed to water, steam, or outdoor weathering. Commonly used in:

• Water systems and plumbing assemblies
• Automotive braking and cooling systems
• HVAC and pump systems
• Outdoor and solar sealing
• General-purpose maintenance and repair sealing solutions

Key Specifications

• Material: EPDM (Ethylene Propylene Diene Monomer)
• Durometer: 70 Shore A
• Color: Black
• Certifications: Available upon request (FDA, NSF-61, USP Class VI)
• Temperature Range: -65°F to +300°F (-54°C to +149°C)
• Compression Set: Low
• Abrasion Resistance: Good

Material Properties – EPDM 70 Duro

Why Choose The O-Ring Store LLC?

We provide more than just products—we offer complete sealing solutions backed by superior customer service and value-added support:

1. ISO9001:2015 Certification: Ensures consistent quality and compliance with industry standards.
2. Customization Services: Spliced and vulcanized O-Rings tailored to your specific needs.
3. Fast Turnaround Times: Reduce downtime with quick order processing and shipping.
4. Precision Engineering: Inspected with Olypsys® Large Format Grid Systems for guaranteed accuracy.
5. Expert Technical Support: Knowledgeable staff ready to assist with application requirements.
6. Eco-Friendly Approach: Flexible lengths reduce material waste and inventory costs.
7. User-Friendly Tools: Use our O-Ring Cord Cut-Length Calculator for hassle-free ordering.

Experience the Difference

At The O-Ring Store LLC, “We make getting O-Rings easy!” Whether you need EPDM 70 Duro Round O-Ring Cord by the foot or spliced and vulcanized custom O-Rings, we’re here to provide solutions that meet your exact specifications.

Order today or contact our team for assistance with your custom sealing needs! Trust The O-Ring Store LLC for superior performance, reliability, and value in every seal.