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Condition:
Factory New
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Learn more:
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MFR:
RPI
Ships from Manufacturer
- MPN: RPO328
- Phone: (800) 221-9723
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Frequently asked questions
Is the material used for this O-ring durable?
Yes, this O-ring is constructed from high-quality Nitrile (Buna N) rubber. This material is specifically chosen for its excellent resistance to oils and fuels, ensuring reliable sealing performance in demanding industrial environments.
Does this O-ring have a reliable hardness rating?
Absolutely. This O-ring features a Shore Hardness of 70 on the Durometer scale, which provides the ideal balance of flexibility and structural integrity for effective sealing applications.
Are these O-rings precise enough for demanding repairs?
Yes, these are precision-engineered components. Each O-ring is manufactured with exact dimensions to ensure a perfect fit:
- Inside Diameter (ID): 0.288 inches
- Outside Diameter (OD): 0.351 inches
- Cross Section (C/S): 0.031 inches
How many O-rings come in a single package?
Each order is conveniently supplied in a package containing 12 units, ensuring you have enough stock for multiple repairs or replacements without needing to order frequently.
Is this product considered a factory-fresh component?
Yes, this is a Factory New RPI part. You can be assured that you are receiving brand-new, unused inventory directly from the manufacturer.
Are these O-rings suitable for general shop maintenance?
Certainly. These O-rings are categorized under General Shop Aids and are specifically designed for miscellaneous industrial applications that require precise, reliable metric sealing solutions.
Will this O-ring hold up against harsh substances?
The Nitrile (Buna N) composition is specifically selected for its durability against common shop substances, particularly its resistance to oils and fuels, making it a dependable choice for maintenance tasks.
Is the sizing consistent across the pack?
Yes, RPI ensures that every unit in the pack meets the exact metric specifications of .288” ID, .351” OD, and .031” Cross Section, providing the consistency required for professional-grade repairs.
Can I rely on RPI quality for this component?
RPI is a trusted manufacturer known for precision-engineered components. This O-ring is a testament to their standard, built to meet specific metric industrial requirements for durability and fit.
Is this a specialized metric part?
Yes, this component is specifically classified as an Industry Part #Metric. It is engineered to meet distinct metric measurements rather than standard imperial sizes, making it the correct choice for equipment requiring these precise dimensions.

RPI RPO328 Industry Part #Metric