The H70344 is an AS568-344 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.
This material stands up to hydraulic fluids, greases and lubricants, and water. Buna-N (Nitrile) delivers the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight.
You will find this material specified across automotive, agricultural equipment, and fluid power.
Order part number H70344, sold individually. Unit weight is approximately 8.86 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -344 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 3.85 inch (97.79 mm)
Actual Outside Diameter 4.27 inch (108.46 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity