<h2>Ouling FKM Fluororubber O-Ring Sealing Gaskets – Industrial Grade</h2> <p>Keep your equipment leak-free and protected against harsh chemicals with these premium <strong>Ouling FKM Fluororubber O-Rings</strong>. Available in two standard cross-section thicknesses — <strong>3.55mm and 5.3mm</strong> — these black ring gaskets are engineered to deliver consistent, long-lasting seals in demanding industrial environments.</p> <p>Made from high-quality <strong>Fluororubber (FKM)</strong>, these O-rings offer outstanding resistance to oils, fuels, solvents, hydraulic fluids, and a wide range of corrosive chemicals. Their standard ring-gasket shape ensures compatibility with common industrial fittings, valves, pumps, and machinery across multiple sectors.</p> <h3>Key Features</h3> <ul> <li> <strong>Material:</strong> High-grade Fluororubber (FKM) for excellent chemical and corrosion resistance</li> <li> <strong>Cross-Section Thickness:</strong> Available in 3.55mm and 5.3mm standard sizes</li> <li> <strong>Color:</strong> Black</li> <li> <strong>Shape:</strong> Standard Ring Gasket</li> <li> <strong>Temperature Resistance:</strong> Suitable for a wide temperature range, ideal for demanding industrial applications</li> <li> <strong>Versatile Use:</strong> Compatible with hydraulic systems, fuel systems, pumps, valves, and general mechanical assemblies</li> <li> <strong>Standard Sizing:</strong> Manufactured to standard dimensions for easy replacement and cross-compatibility</li> <li> <strong>Durable Construction:</strong> Resists degradation from oils, fuels, solvents, and corrosive chemicals</li> </ul> <h3>Specifications</h3> <table> <tr> <td><strong>Brand</strong></td> <td>Ouling</td> </tr> <tr> <td><strong>Material</strong></td> <td>Fluororubber (FKM / Rubber)</td> </tr> <tr> <td><strong>Thickness (Cross-Section)</strong></td> <td>3.55mm / 5.3mm</td> </tr> <tr> <td><strong>Color</strong></td> <td>Black</td> </tr> <tr> <td><strong>Shape</strong></td> <td>Ring Gasket</td> </tr> <tr> <td><strong>Standard</strong></td> <td>Standard</td> </tr> <tr> <td><strong>Application</strong></td> <td>Industrial sealing, hydraulic, fuel, chemical systems</td> </tr> <tr> <td><strong>Country of Origin</strong></td> <td>Made in Mainland China</td> </tr> </table> <h3>Ideal Applications</h3> <ul> <li>Hydraulic and pneumatic systems</li> <li>Fuel and oil system seals</li> <li>Chemical processing equipment</li> <li>Pumps, valves, and pipe fittings</li> <li>Automotive and industrial machinery maintenance</li> </ul> <h3>Related Products You May Also Like</h3> <ul> <li><a href="/products/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals">10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals</a></li> <li><a href="/products/stainless-steel-self-tapping-screws-m2-2-m4-8-phillips-wood-hinge">10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips</a></li> <li><a href="/products/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1">10pcs Durable Gold Blade Nut Metal Universal Trimmer Replacement Parts</a></li> </ul> <p>Learn more: <a href="https://www.osha.gov/hand-power-tools" target="_blank" rel="noopener">OSHA guidance on hand and power tools</a></p> <h3>Frequently Asked Questions</h3> <h4>Q: What does FKM Fluororubber mean and why is it used for O-ring gaskets?</h4> <p>A: FKM (Fluororubber) is a high-performance synthetic rubber known for its exceptional resistance to oils, fuels, solvents, and a wide range of corrosive chemicals. It is widely used in industrial O-ring sealing applications because it maintains its integrity under harsh chemical exposure and across a broad temperature range, making it a reliable choice for hydraulic systems, fuel systems, and chemical processing equipment.</p> <h4>Q: What sizes are these O-rings available in?</h4> <p>A: These FKM O-ring gaskets are available in two standard