O Ring Hydraulic Fittings

Experience superior, leak-free connections for your hydraulic systems. Our O-Ring hydraulic fittings provide exceptional sealing under high pressures and strong vibrations. Easy to install and highly durable, they ensure reliable performance and minimize downtime. Choose our fittings for a robust and efficient hydraulic solution, perfect for demanding industrial, construction, and mobile applications.

Quote Wholesale O Ring Hydraulic Fittings to Delight Your Clients

Offer your customers superior, leak-proof performance with our competitively priced O-Ring hydraulic fittings. Ensure their satisfaction with durable, high-quality connections designed for reliability in demanding applications. Stock up on our wholesale O-Ring fittings and provide exceptional value, building lasting client relationships and boosting your business. Partner with us for quality and savings.

O-Ring Material & Properties

We offer customization by selecting the ideal O-ring elastomer, such as Nitrile (NBR), (FKM), EPDM, or Silicone, to match your fluid compatibility, temperature range, and pressure requirements. We help you choose the correct durometer and profile, ensuri

Thread Type & Size

To ensure perfect integration with your existing components, we offer fittings with a wide variety of international thread standards, including NPT, BSPP, BSPT, JIC, SAE, or metric threads. We customize the exact thread type, pitch, and size, guaranteeing leak-proof connections and straightforward assembly, preventing system failures.

Fitting Body Material

We offer a range of fitting body materials to suit your needs, from carbon steel for general use to stainless steel (e.g., 304, 316) for corrosive media or hygienic applications, and brass for specific low-pressure scenarios. For extreme conditions, we can provide specialized alloys, ensuring structural integrity and system reliability.

Surface Treatment & Coatings

We offer various surface treatments and coatings to enhance your fitting’s performance and lifespan. Options include zinc plating, advanced zinc-nickel alloys for superior corrosion resistance, or passivation for stainless steel. We can apply coatings to reduce friction or provide specific identification, protecting fittings in harsh environments.

All O Ring Hydraulic Fittings

hydraulic fitting with o ring

hydraulic fitting with o ring

We offer a comprehensive range of hydraulic fittings with O-rings, engineered for superior, leak-free connections. Our fittings provide exceptional sealing performance and reliability in demanding applications. You’ll find a wide selection of sizes and configurations to meet your specific hydraulic system needs.

o ring face seal hydraulic fittings

o ring face seal hydraulic fittings

We offer a comprehensive selection of O-ring face seal (ORFS) hydraulic fittings, engineered for leak-free performance in high-pressure systems. Our fittings provide superior sealing, easy assembly, and reduced maintenance, ensuring reliable connections for diverse hydraulic applications. Choose from a wide range of sizes and configurations to meet your specific needs.

tapered o ring hydraulic fitting

tapered o ring hydraulic fitting

We offer a wide range of tapered O-ring hydraulic fittings. Engineered for superior sealing and leak-free performance, our fittings provide reliable connections in high-pressure hydraulic systems. Available in various sizes and materials, they ensure optimal system integrity and efficiency. Trust our quality for durable and dependable hydraulic solutions.

metric o ring hydraulic fittings

metric o ring hydraulic fittings

We offer a full range of metric O-ring hydraulic fittings designed for superior sealing and leak-free performance. Our selection includes various types like ORFS, straight, elbow, and stud fittings, ensuring compatibility with diverse hydraulic systems. Crafted from durable materials like stainless steel and carbon steel, our fittings provide reliable connections for high-pressure and demanding applications across industries.

metric 24 cone o ring hydraulic fittings

metric 24 cone o ring hydraulic fittings

We offer a wide range of metric 24° cone O-ring hydraulic fittings (DKO), engineered for leak-free, high-pressure performance. Our fittings meet ISO 8434-1 / DIN 2353 standards and are available in various configurations, including straight, elbow, and tee designs. Crafted from durable materials like steel, stainless steel, and brass, they ensure reliable connections for diverse hydraulic applications.

swivel female o ring hydraulic fittings

swivel female o-ring hydraulic fittings

We offer a comprehensive selection of swivel female O-ring hydraulic fittings, designed for reliable, leak-free connections. Our fittings ensure flexibility and easy alignment in hydraulic systems, reducing stress on hoses and prolonging component life. Ideal for diverse industrial applications, they provide secure and efficient fluid transfer, enhancing operational safety and performance.

swaged metric 24° cone o ring hydraulic fittings

swaged metric 24° cone o-ring hydraulic fittings

We offer a wide range of swaged metric 24° cone O-ring hydraulic fittings. These precision-engineered fittings ensure leak-free connections and superior performance in demanding hydraulic systems. Designed for easy assembly and reliable sealing, our fittings provide excellent durability and resistance to high pressures.

90° elbow with o ring hydraulic fittings

90° elbow with o-ring hydraulic fittings

We offer 90° elbow hydraulic fittings with O-ring seals, ensuring a leak-proof and robust connection for your hydraulic systems. Our fittings provide excellent flow characteristics and are built for durability in demanding applications. They’re ideal for tight spaces, simplifying your hose routing and system design.

barbed o ring hydraulic fittings

barbed o ring hydraulic fittings

We supply barbed O-ring hydraulic fittings wholesale, offering a reliable and secure solution for your hydraulic system needs. Our fittings ensure leak-proof connections, crucial for both low and moderate-pressure applications. Made from durable materials like steel and brass, they’re designed for easy installation and long-lasting performance. Contact us for bulk orders and competitive pricing.

What Are O Rings for Hydraulic Fittings?

o ring for hydraulic fittings

O-rings for hydraulic fittings are circular, elastomeric rings designed to create a tight, leak-proof seal at connection points within hydraulic systems. They are crucial for preventing fluid leaks and ensuring efficient system operation. 

When a hydraulic fitting with an O-ring is assembled, the O-ring is compressed into a groove, deforming slightly to fill any gaps between the mating surfaces. This compression creates a continuous barrier that effectively seals in the hydraulic fluid, even under high pressures and varying temperatures. 

Their elasticity allows them to conform to minor surface imperfections and thermal expansion, making them highly reliable in both static and dynamic applications.

What hydraulic fittings use O-rings?

O-rings are integral to several types of hydraulic fittings, providing a superior leak-proof seal compared to traditional metal-to-metal seals. Their use is especially prevalent in high-pressure applications where preventing fluid loss and ensuring system integrity are critical. 

The most common hydraulic fittings that incorporate O-rings are:

  • O-Ring Boss (ORB) Fittings: These fittings feature a straight thread with an O-ring at the base of the male thread. The O-ring compresses into a chamfered area of the female port, creating a reliable seal. They are widely recommended for medium to high-pressure systems due to their excellent leak prevention.
  • O-Ring Face Seal (ORFS) Fittings: In ORFS fittings, the O-ring is situated in a groove on the flat face of the male fitting. When tightened, this O-ring is compressed against a flat face of the mating fitting or tube, forming a robust seal that is highly resistant to vibration and pressure impulses, making them popular in off-road and construction equipment.
  • SAE 4-Bolt Flange Fittings: These fittings are used for larger diameter tubing or high-pressure applications, connecting pipes, valves, and pumps. An O-ring is typically placed in a groove on the flanged head and compressed between the flanged head and the mating flat surface of the port when the bolts are tightened, ensuring a secure, leak-free connection.
  • Flare-O Fittings (SAE 37° Flare with O-Ring): While JIC 37° flare fittings primarily rely on a metal-to-metal seal, some variations incorporate an O-ring for enhanced leak prevention, particularly in demanding applications. The O-ring provides an additional layer of sealing to the flared connection.

Types of Hydraulic Fittings with O Ring

O-rings are vital components in several types of hydraulic fittings, providing superior sealing capabilities, especially in high-pressure applications. These fittings are designed to prevent leaks and ensure the integrity of hydraulic systems. 

Here are the main types of hydraulic fittings that utilize O-rings:

  • O-Ring Boss (ORB) Fittings: These fittings feature a straight thread on the male end and an O-ring at the base. The O-ring compresses into a chamfered groove in the female port when the fitting is tightened, creating a robust, leak-proof seal. ORB fittings are widely used for medium to high-pressure systems due to their excellent resistance to leaks and ease of assembly.

  • O-Ring Face Seal (ORFS) Fittings: ORFS fittings are characterized by an O-ring located in a groove on the flat face of the male fitting. When the male and female fittings are connected, this O-ring is compressed against the flat face of the mating fitting or tube, forming an incredibly reliable seal. They are highly resistant to vibration and pressure impulses, making them a preferred choice in demanding environments like heavy construction and off-road equipment.

  • SAE 4-Bolt Flange Fittings: These fittings are commonly used for larger diameter tubing or in very high-pressure hydraulic applications. An O-ring is seated in a groove on the flange head of the male fitting. When the four bolts are tightened, the O-ring is compressed between the flange head and the flat mating surface of the port, ensuring a secure and leak-free connection. There are two main pressure classes: Code 61 (standard duty) and Code 62 (heavy duty).

  • Flare-O Fittings (SAE 37° Flare with O-Ring): While standard SAE 37° flare (JIC) fittings primarily rely on a metal-to-metal conical seal, some specialized variations, known as Flare-O fittings, incorporate an O-ring. This O-ring provides an enhanced seal, acting as an additional layer of protection against leaks in applications where a higher degree of sealing reliability is desired, especially for older or more sensitive systems.

Why Choose Our O Ring Hydraulic Fittings?

Choosing our O-ring hydraulic fittings offers numerous advantages, ensuring optimal performance and reliability for your hydraulic systems. We prioritize quality, durability, and customer satisfaction, making our fittings a smart investment for a wide range of applications.

Here’s why you should choose our O-ring hydraulic fittings:

  • Superior Leak Prevention: Our fittings are engineered with precision to provide the most effective leak-proof seals available. The O-ring design ensures a tight, reliable connection that significantly reduces the risk of fluid loss, even under high pressure and intense vibrations. This translates to less downtime and reduced maintenance costs for your operations.

  • Enhanced Durability and Longevity: Manufactured from high-grade materials like robust steel and corrosion-resistant brass, our O-ring fittings are built to withstand the harshest operating conditions. They resist wear, corrosion, and extreme temperatures, ensuring a longer service life and consistent performance in demanding industrial and mobile applications.

  • Wide Range of Applications: We offer a comprehensive selection of O-ring fitting types, including ORB, ORFS, and SAE 4-Bolt Flange fittings, catering to diverse hydraulic system requirements. Whether your application demands high pressure, resistance to impulses, or ease of assembly, we have the right fitting to meet your specific needs.

  • Easy Installation and Maintenance: Our fittings are designed for straightforward installation, reducing labor time and complexity during assembly. The inherent design of O-ring seals also often simplifies maintenance, as worn O-rings can be readily replaced, extending the life of the entire fitting.

  • Cost-Effectiveness: By minimizing leaks, extending component lifespan, and simplifying maintenance, our O-ring hydraulic fittings contribute to significant long-term cost savings. Their reliability also helps prevent costly system failures and production interruptions, offering excellent value for your investment.