7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals
7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals

7mm Cross Section O-Rings NBR Nitrile Rubber 209mm - 754mm OD Oil Resistant Seals

$10.12 USD
Auf Lager
Outer x Inner x Cross section:

Outer x Inner x Cross section
Packing Quantity (pieces):

Packing Quantity (pieces)
Menge:
COUPON Code：Welcome

Only once, Get 10% off now

Amazon American Express Apple Pay Bancontact Diners Club Discover Google Pay iDEAL Mastercard PayPal Shop Pay USDC Visa

  • Delivery

    Express shipping (1-7 Days)
    Standard shipping: (3-14 Days)

  • Free Return & Exchange

    30-Day Money Back
    Free Exchange & No-Hassle Returns

  • Shipping from US facilities

  • Your purchase makes a difference.
    Your impact: 1 tree will be planted with this purchase.

🔍 Premium 7mm NBR O-Rings for Heavy-Duty Sealing Solutions

Upgrade your industrial, automotive, or DIY projects with our professional-grade 7mm Cross Section NBR O-Rings! Engineered from high-quality Nitrile Rubber (Buna-N), these thick-section seals deliver unbeatable reliability against oils, fuels, water, and wear. Perfect for demanding applications where failure is not an option.

🌟 Key Advantage: With a wide operating range from -40°F to +248°F (-40°C to +120°C) and superior extrusion resistance, these 7mm thick O-rings perform consistently in freezing conditions and high-temperature industrial environments alike.

📋 Detailed Specifications for 7mm NBR O-Rings

Material Nitrile Rubber (NBR / Buna-N) – Industry standard for oil and fuel resistance.
Cross Section (Thickness) 7mm (0.276") – Heavy-duty profile for high-pressure and large clearance applications.
Outer Diameter (OD) Range Approx. 30mm (1.18") to 754mm (29.69") – A comprehensive kit covering numerous sizes.
Hardness (Durometer) Shore 70A – Optimal balance of sealing force and flexibility.
Temperature Range -40°F to +248°F (-40°C to +120°C) – Suitable for extreme environments.
Key Features & Resistance Excellent resistance to petroleum oils, fuels, water, and hydraulic fluids. Good abrasion & compression set resistance. Reliable sealing under pressure.

🛠️ Ideal Application Scenarios for 7mm Industrial O-Rings

This robust 7mm cross-section O-ring is designed for heavy-duty sealing tasks across multiple sectors:

  • 🚗 Automotive & Heavy Machinery: Hydraulic cylinders, engine systems, power steering, fuel injection components, transmission seals.
  • 🏭 Industrial & Manufacturing: Hydraulic/pneumatic presses, pumps, compressors, valve stems, fluid power equipment.
  • 🔩 Plumbing & Fluid Handling: Large pipe flanges, filters, water treatment systems, irrigation equipment.
  • ⚙️ Agricultural & Marine: Tractor hydraulics, implement seals, boat engine systems, underwater fittings.
  • 🏗️ General Maintenance & Repair: The perfect seal for DIYers and professionals tackling a wide variety of repair jobs.

❓ Frequently Asked Questions About Our 7mm NBR Seals

Are these 7mm O-rings suitable for high-pressure hydraulic systems? 💧

Yes, absolutely. The 7mm cross-section is specifically chosen for high-pressure applications. It provides significantly greater resistance to extrusion and blow-out compared to standard thinner O-rings, making it an excellent choice for hydraulic cylinders and industrial fluid power systems.

How do I choose the right size from your range? 📏

You need two measurements: Cross Section (7mm) and Inner Diameter (ID) or Outer Diameter (OD). Measure the groove where the seal will sit. Our wide OD range (30mm-754mm) ensures a fit for most applications. If replacing an old O-ring, match its dimensions. For grooves, the ID is typically the critical measurement.

Can these NBR seals handle gasoline and diesel fuel? ⛽

Yes. NBR (Nitrile) rubber is renowned for its excellent resistance to petroleum-based products, including gasoline, diesel, and motor oils. These 7mm oil-resistant seals will maintain their sealing properties and physical integrity during prolonged exposure to common fuels and lubricants.

What's the benefit of a 7mm O-ring over a standard 3mm or 5mm one?

7mm O-rings offer distinct advantages: Superior extrusion resistance in high-pressure or large-gap applications, longer service life in dynamic settings due to more material to wear, and better compensation for gland wear, surface imperfections, or misalignment. They are the go-to for heavy industrial use.

Do you offer bulk pricing for commercial or shop orders? 🏭

We provide competitive pricing for bulk quantities. Our extensive 7mm NBR O-ring collection is ideal for maintenance shops, factories, and fleet services. For very large or custom-size inquiries, please contact us directly through the store to discuss your specific volume and requirements.