Hydraulic Nuts and Sleeves
Whether you're maintaining turbines, assembling large bearings, or working with high-tension bolting systems, hydraulic nuts and sleeves offer reliable, repeatable results that traditional tightening methods can’t match. Hydraulic nuts and sleeves reduce downtime, minimize component stress, and ensure consistent joint integrity, enhancing equipment performance.
UPC supplies steel 37° JIC flare nuts, sleeves, and conversion fittings designed for reliability, corrosion resistance, and interchangeability across a wide range of brands. Contact us to learn more, or request a quote today.
UPC supplies steel 37° JIC flare nuts, sleeves, and conversion fittings designed for reliability, corrosion resistance, and interchangeability across a wide range of brands. Contact us to learn more, or request a quote today.
Pressure Connections Steel Hydraulic Fitting Product Options
UPC supplies hydraulic nuts and sleeves from Pressure Connections and other top brands to complete countless jobs in the pneumatic, hydraulic & automation components industry. Product options include:Tube Nuts (Standard 37° JIC Flare)
Precision-machined nuts designed to clamp a flared hydraulic tube against a male fitting for a leak-free seal. Commonly available in steel with zinc trivalent plating, these reusable nuts ensure dependable performance in high-pressure systems.Tube Sleeves (Flare Sleeves, 319 Series)
Steel sleeves that sit directly behind the 37° tube flare, reinforcing the joint and evenly distributing compression. They prevent cracking under pressure and vibration—a key component in every JIC assembly.Long Flare Nuts (One-Piece Design)
Extended nuts that eliminate the need for a separate sleeve. Their integrated design simplifies installation while maintaining the same sealing integrity as standard nut/sleeve combinations. Ideal for field repairs or space-limited assemblies.Tube Caps (304C Series)
Female-threaded JIC caps that protect open hydraulic lines from debris, contamination, or fluid loss during testing, shipping, or maintenance.Convert-A-Flare Nut & Sleeve (418–419 Series)
A no-flare assembly that converts plain tubing into a 37° JIC connection. The sleeve bites into unflared tubing, creating a secure, leak-tight compression-style seal — ideal for quick retrofits or where flaring tools are unavailable.Steel Hydraulic Fitting Applications
UPC’s hydraulic nuts and sleeves are designed for use in heavy-duty applications, including heavy equipment, aerospace, industrial hydraulics, and mobile systems. All fittings comply with SAE J514 standards for universal compatibility, ensuring leak-free performance even under high vibration or pressure.Steel Hydraulic Fitting Advantages
Don’t settle for guesswork with torque wrenches, uneven tightening, or compromised joints. Upgrade to UPC’s hydraulic nuts and sleeves for precision, safety, and repeatable performance, even on the heaviest, most demanding applications. Benefits include:- Corrosion-resistant zinc trivalent plating (RoHS-compliant).
- Interchangeable across major brands like Pressure Connections, Parker, and Eaton.
- Easy assembly/disassembly for maintenance.
- Compatible with a wide range of tube O.D. sizes.
What Are Nut and Sleeve Hydraulic Fittings Used For?
Nut and sleeve fittings secure flared tubes to fittings or adapters, forming a pressure-resistant, leak-free metal-to-metal seal used in high-pressure hydraulic lines.How Do Nut and Sleeve Hydraulic Fittings Work?
The nut tightens over the sleeve and tube flare, pressing the flare against the male fitting’s cone to form a mechanical seal that withstands vibration and pressure.When Are Tube Nuts and Sleeves Required?
Tube nuts and sleeves are required for 37° flared JIC connections when assembling hydraulic tubing, especially in systems that require reusable, serviceable joints rather than welded or compression connections.Similar Product Options
Additional product options include:Why Choose UPC for Your Hydraulic Nut and Sleeve Needs?
In the market for premium steel hydraulic fittings? UPC has you covered. Reasons to choose UPC include:- Trusted Partnerships: UPC partners with Pressure Connections to provide high-quality brass compression fittings engineered for lasting performance and precision.
- Extensive Inventory: Offers a complete selection of straight, elbow, tee, bulkhead, and union compression fittings to support a wide range of hydraulic and pneumatic systems.
- Reliable Quality: Each fitting is precision-machined for leak-free sealing, corrosion resistance, and consistent performance under pressure.
- Fast, Dependable Service: Large in-stock inventory ensures short lead times and quick order fulfillment for OEMs, MROs, and system integrators.
- Expert Technical Support: UPC’s knowledgeable team guides customers to help identify the correct fitting type, size, and material for their specific applications.
- One-Stop Supplier: In addition to compression fittings, UPC offers a full range of hydraulic, pneumatic, and electrical components for complete system solutions.