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Item #:
18907355
Captain O-Ring - ORB BOSS Hydraulic Fitting SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit, 12 Sizes)
Item #:
18907355
€ 54
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*All items will import from US
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Imported from USA store
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Order now and get it around Sunday, August 23
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Includes high quality BN70 (Buna Nitrile 70 durometer) o-rings - the most common o-ring material.
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What Stands Out
Comprehensive Kit
Includes 255 pieces across 12 sizes, ensuring you have the right O-ring for various hydraulic applications, reducing downtime and enhancing efficiency in repairs.
Durable Material
Constructed from high-quality Buna-N, providing excellent resistance to oils, fuels, and chemicals, ensuring long-lasting performance and reliability in challenging environments.
Precision Engineering
Designed to meet SAE specifications, ensuring optimal sealing performance that prevents leaks and maintains pressure in hydraulic systems, enhancing overall system integrity.
Product Details
- Includes high quality BN70 (Buna Nitrile 70 durometer) o-rings
- Service temperature of -40F to 250F
- Includes all 12 BOSS/ORB o-ring sizes between -904 to -916, totaling 255 o-rings
- Used in sealing straight thread tube fittings (ORB / O-Ring Boss Type) in hydraulic equipment
- O-Rings are conveniently sorted by size in individual compartments within the divider box with a size chart included
- Manufactured and Warrantied by Captain O-Ring LLC, assembled in the USA
| Package Weight | 2.53 Pound |
Who Should Buy?
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DIY Enthusiasts
Ideal for hobbyists working on home projects, needing versatile seals for various hydraulic and pneumatic applications.
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Professional Mechanics
Essential for automotive and equipment maintenance, providing reliable seals for hydraulic systems in vehicles and machinery.
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Industrial Technicians
Beneficial for technicians needing a comprehensive selection of O-rings for routine repairs and equipment upkeep.
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Casual Users
Not suitable for individuals who require infrequent use or only need specific O-ring sizes occasionally.
Product Description
Captain O-Ring - ORB BOSS Hydraulic Fitting SAE 900 O-Ring Seal Kit (Buna-N 70-255 Piece Kit, 12 Sizes)
About This Item
Introducing the Captain O-Ring - ORB BOSS Hydraulic SAE 900 O-Ring Seal Kit Buna-N 70-255 Piece Kit! Ensure a tight and secure seal with the Captain O-Ring Hydraulic BN70 O-Ring Kit. This comprehensive kit contains 255 o-rings in 12 different sizes, making it perfect for sealing straight thread tube fittings (BOSS Type) commonly found in hydraulic equipment. Crafted from Buna Nitrile (BN70) material, these o-rings are known for their resistance to a wide range of hydraulic fluids and their ability to maintain flexibility and sealability even in low temperatures. Rest assured that your hydraulic system will be well-protected with these high-quality o-rings. To make sizing up o-rings a breeze, we've included a handy size chart on the front of the kit.
No more guessing or searching through multiple sizes - simply consult the chart and find the perfect fit for your specific needs. Organized and convenient, the o-rings are neatly sorted by size in a shatterproof Flambeau divider box. No more rummaging through a messy collection of o-rings - everything you need is easily accessible and well-protected. Your purchase includes 255 o-rings in a robust Flambeau plastic divider case, branded with the Captain O-Ring logo. Rest assured that you're getting a top-quality product, as this kit is manufactured and comes with a one-year warranty against defects by Captain O-Ring LLC, a trusted name in the industry. Don't compromise on the integrity of your hydraulic system.
Choose the Captain O-Ring - ORB BOSS Hydraulic SAE 900 O-Ring Seal Kit for reliable and durable seal protection. Order yours today and experience the Captain O-Ring difference!.
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is included in the Captain O-Ring - ORB BOSS Hydraulic Fitting Kit?
Answer: The Captain O-Ring kit includes 255 Buna-N O-rings in 12 different sizes, catering to a wide range of applications. This diversity allows users to choose the perfect seal based on their specific hydraulic fitting needs. Whether you are working on automotive systems, lawn mowers, or industrial machinery, you'll have the right size on hand, minimizing the downtime typically associated with searching for parts. -
Question:
What materials are the O-rings made of?
Answer: The O-rings in this kit are made from Buna-N, a synthetic rubber that is highly resistant to oils, fuels, and other chemicals. This material is chosen for its durability and performance in various hydraulic applications. Buna-N's resilience under heat and pressure makes it an ideal choice for maintaining optimal seals in hydraulic systems, helping to prevent fluid leaks and ensuring efficient operation. -
Question:
How do I select the right O-ring size for my hydraulic fitting?
Answer: Selecting the right O-ring size involves measuring the inner diameter and cross-section of the fitting. Each size in the kit is labeled with its specifications, allowing you to match your measurements to the appropriate O-ring. This ensures a proper fit, which is crucial for maintaining hydraulic pressure and preventing leaks. Additionally, consulting the fitting's manual or manufacturer guidelines can provide specific size recommendations. -
Question:
Can I use the Captain O-Ring kit for applications other than hydraulic fittings?
Answer: Yes, while primarily designed for hydraulic fittings, the Captain O-Ring kit can be used in a variety of applications, including pneumatic systems, household plumbing repairs, and automotive projects. Its versatility allows DIY enthusiasts and professionals to utilize the right O-ring for any sealing requirement, enhancing reliability in diverse environments. -
Question:
What are the advantages of using a Buna-N O-ring over other materials?
Answer: Buna-N O-rings offer several advantages, including excellent resistance to petroleum-based fluids and many chemicals, making them a popular choice for hydraulic applications. They also exhibit good mechanical properties and can operate effectively across a temperature range. Compared to other materials, Buna-N provides a cost-effective solution without compromising on durability, making it ideal for various sealing tasks. -
Question:
Are these O-rings suitable for high-pressure hydraulic systems?
Answer: Yes, the O-rings in the Captain O-Ring kit are designed to handle high-pressure applications. Buna-N is known for its strength and flexibility under pressure, which helps ensure a reliable seal in demanding conditions. When properly sized and installed, these O-rings can maintain integrity in high-pressure hydraulic systems, preventing leaks and ensuring efficient operation. -
Question:
What is the temperature range for the Buna-N O-rings?
Answer: Buna-N O-rings typically perform well within a temperature range of -30°F to 250°F (-34°C to 121°C). This wide temperature tolerance allows them to be used in various environments without losing their sealing capabilities. It’s important to check the specific requirements of your application, especially in extreme conditions, to ensure optimal performance. -
Question:
How do I properly install an O-ring from the kit?
Answer: Proper installation of an O-ring involves cleaning the groove where the O-ring will sit, ensuring there are no contaminants or sharp edges that could damage it. Stretch the O-ring slightly as you fit it into its groove, ensuring it sits evenly without twists. This reduces the risk of leaks and prolongs the seal’s lifespan. Proper installation technique is crucial for maintaining hydraulic efficiency. -
Question:
Is the Captain O-Ring kit suitable for industrial applications?
Answer: Absolutely! The Captain O-Ring kit is highly suitable for industrial applications, thanks to its robust construction and variety of sizes. Whether you're involved in manufacturing, maintenance, or machinery repairs, these O-rings can tackle a wide range of sealing requirements. Their reliability and chemical resistance make them a staple in any industrial toolkit. -
Question:
Where can I buy Captain O-Ring - ORB BOSS Hydraulic Fitting SAE 900 O-Ring Seal Kit?
Answer: You can purchase the Captain O-Ring - ORB BOSS Hydraulic Fitting SAE 900 O-Ring Seal Kit from Ubuy in Ireland. Ubuy offers a reliable platform for a wide range of products, ensuring quick access to this essential seal kit for all your hydraulic needs.
Captain O-Ring O-Rings Editorial Review
The Captain O-Ring - ORB BOSS Hydraulic SAE 900 O-Ring Seal Kit Buna-N 70-255 Piece Kit appears to be a high-quality hydraulic o-ring kit that is useful for replacing o-rings on tractors, cars, or other equipment. The kit comes in a clear plastic box that is significantly higher quality than expected, and the o-rings themselves have a nice feel and appear to be of nice quality. The kit has all the common sizes, and customers have reported that the o-rings fit very well in their machines. The case is nice to keep them organized, and it is not flimsy.
Customer Reviews & Ratings
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Pros
- High-quality hydraulic o-rings
- Nice feel and quality of the Buna durometer
- Large assortment of sizes
- Kit comes in a nice, durable case
Platform Trust & Buyer Confidence
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Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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€ 54
Order now and get it around Sunday, August 23
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Features & Benefits
- High quality BN70 o-rings included
- Covers all sizes between -904 to -916
- Suitable for sealing thread tube fittings in hydraulic equipment
- Conveniently sorted by size
- Assembled in the USA
- Manufactured and Warrantied by Captain O-Ring LLC
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