.375" (3/8") Buna-N O-Ring Cord Stock - 70A Duro, .375" Thick, 10 Ft Length, Black Buna Nitrile Rubber

Buna-N 70A durometer rubber offers excellent resistance to oil, gasoline, diesel fuel, and hydrocarbon solvents. It also provides good resistance to water, mild acids, and alkali substances. With dependable heat, oxidation, and abrasion resistance, this material performs well in demanding environments.Material: Buna-N (Nitrile) RubberDurometer: 70A (Medium Firmness)Diameter: .375 Inch (9.52mm) Round Solid CordLength: 10 FeetColor: BlackExcellent Oil & Fuel ResistanceGood Heat and Abrasion Resistance How to Make Custom O-Rings:Measure the required inside diameter (ID) of your O-ring.Calculate the total cord length needed: multiply the desired inside diameter by 3.1416 (π).Cut the rubber cord squarely to the calculated length using a sharp blade.Apply a small amount of rubber adhesive (cyanoacrylate or rubber bonding adhesive) to one cut end.Press both ends together carefully, aligning them evenly to create a smooth joint.Allow adhesive to fully cure according to manufacturer instructions before use. Ideal for automotive, hydraulic, plumbing, marine, and industrial sealing applications requiring durable and reliable rubber material.

• Length: 10 FT - Diameter: .375 Inch (9.52mm) Round - Color: Black
• Solid Buna-N (Buna Nitrile Rubber) cord with 70A durometer hardness and approximately 1250 psi tensile strength for durable, long-lasting performance
• Resistant to gasoline, oils, grease, and hydrocarbon solvents; performs reliably in temperatures from
• Ideal for making custom O-rings for hardware, pumps, valves, hydraulic systems, and automotive engines tailored to your exact size requirements
• Generous 10-Foot length provides enough material to create multiple O-rings or large custom seals for professional or DIY applications