<h2>30-Pack Black NBR Nitrile Rubber O-Ring Seals — CS1.5mm | OD 11–20mm</h2> <p>Keep your machinery, plumbing, and hydraulic systems leak-free with these premium <strong>Black NBR (Nitrile Butadiene Rubber) O-Ring Seals</strong>. Each pack contains <strong>30 pieces</strong> of standard-sized gasket washers with a cross-section of <strong>1.5mm</strong> and outer diameters ranging from <strong>11mm to 20mm</strong> — making them a versatile addition to any toolbox, workshop, or maintenance kit.</p> <p>Made in Mainland China.</p> <h3>Key Features</h3> <ul> <li> <strong>Wide Temperature Range:</strong> Rated for continuous use from <strong>-40°C to +120°C</strong> (-40°F to 248°F), suitable for both cold and high-heat environments.</li> <li> <strong>Oil Resistant:</strong> NBR material provides excellent resistance to petroleum-based oils, fuels, and hydraulic fluids — helping prevent leaks and seepage.</li> <li> <strong>Wear Resistant:</strong> Durable nitrile rubber construction holds up under repeated compression and friction, maintaining a reliable seal over time.</li> <li> <strong>Standard Sizing:</strong> Cross-section (CS) 1.5mm with OD range of 11mm–20mm makes these compatible with a wide variety of fittings and connectors.</li> <li> <strong>Versatile Applications:</strong> Ideal for machinery, plumbing systems, automotive engines, hydraulic fittings, pneumatic systems, pumps, valves, and more.</li> <li> <strong>Great Value:</strong> 30 pieces per lot at an accessible price point — perfect for maintenance professionals and DIY enthusiasts alike.</li> </ul> <h3>Specifications</h3> <table style="width:100%; border-collapse:collapse;"> <tr style="background:#f5f5f5;"> <td style="padding:8px; border:1px solid #ddd;"><strong>Material</strong></td> <td style="padding:8px; border:1px solid #ddd;">NBR (Nitrile Butadiene Rubber)</td> </tr> <tr> <td style="padding:8px; border:1px solid #ddd;"><strong>Color</strong></td> <td style="padding:8px; border:1px solid #ddd;">Black</td> </tr> <tr style="background:#f5f5f5;"> <td style="padding:8px; border:1px solid #ddd;"><strong>Cross-Section (CS)</strong></td> <td style="padding:8px; border:1px solid #ddd;">1.5mm</td> </tr> <tr> <td style="padding:8px; border:1px solid #ddd;"><strong>Outer Diameter (OD)</strong></td> <td style="padding:8px; border:1px solid #ddd;">11mm – 20mm</td> </tr> <tr style="background:#f5f5f5;"> <td style="padding:8px; border:1px solid #ddd;"><strong>Quantity</strong></td> <td style="padding:8px; border:1px solid #ddd;">30 Pieces per Lot</td> </tr> <tr> <td style="padding:8px; border:1px solid #ddd;"><strong>Temperature Range</strong></td> <td style="padding:8px; border:1px solid #ddd;">-40°C to +120°C</td> </tr> <tr style="background:#f5f5f5;"> <td style="padding:8px; border:1px solid #ddd;"><strong>Standard</strong></td> <td style="padding:8px; border:1px solid #ddd;">Standard</td> </tr> <tr> <td style="padding:8px; border:1px solid #ddd;"><strong>Origin</strong></td> <td style="padding:8px; border:1px solid #ddd;">Mainland China</td> </tr> </table> <h3>Common Applications</h3> <ul> <li>Plumbing pipe fittings and connectors</li> <li>Automotive engine and fuel system seals</li> <li>Hydraulic and pneumatic cylinders</li> <li>Industrial machinery and equipment</li> <li>Pumps, valves, and compressors</li> <li>General maintenance and repair projects</li> </ul> <p><strong>Shopping Tip:</strong> Need multiple sizes? Add all the sizes you need to your cart first, then place a single order to take advantage of combined shipping savings.</p> <p><em>Note: Due to variations in monitor display settings and lighting, the actual color of the product may appear slightly different from the images shown.</em></p> <h3>You May Also Like</h3> <ul> <li><a href="/products/10pcs-2-pin-quick-splice-spring-wire-connectors-lock-terminals">10pcs 2-Pin Spring Wi