Article List

• Introduction to Liner & Nut for American-Style Ferrule Fittings (Eaton Standard NB200 & NB300)

  This document introduces Eaton Standard NB200 nut and NB300 front ferrule, core components of American JIC 37° Triple-Lok hydraulic tube fittings. NB200 is a hexagonal internally threaded nut (UNF fine thread, carbon/stainless steel) for torque transmission and tubing fixation. NB300 is a single front ferrule with a 37° cone and cutting edge, achieving sealing and gripping when tightened, with high-pressure and vibration resistance. It also covers size matching, comparisons with Metric 24° cone fittings, and key selection/installation tips for hydraulic, oil & gas, and marine applications.

  Product News April 14, 2026
• Quality Matters: Why Yuyao Ruihua Chooses Bar Stock Machining for 5N Series Hydraulic Bushing

  For 5N series hydraulic transition bushings, the difference between "good" and "great" often comes from how they are made. At Yuyao Ruihua Hardware Factory, we put quality first. That’s why we make our bushings from solid bar stock, not cold-forged blanks. Here’s why our method is better.1. Process:

  Product News April 07, 2026
• Hydraulic Hose Crimping Fail： Uneven Threads = Hidden Danger!

  If you work in hydraulics, you know that crimping is the most critical part of making a hose assembly.At RUIHUA HARDWARE, we see too many failures caused by uneven crimping—and that’s a much bigger problem than it looks. 

  Product News March 31, 2026
• Premium 45# Steel Hydraulic Adapters - Engineered for Durability & Precision | Yuyao Ruihua Hardware Factory

  At Yuyao Ruihua Hardware Factory, we specialize in the design, development, and manufacturing of high-performance hydraulic adapters crafted from premium 45# medium carbon steel. Our commitment to quality and precision engineering ensures that every fitting delivers exceptional durability, leak-free

  Product News March 24, 2026
• Torque vs. Feel: Tightening Hydraulic Fittings-Which Should You Trust

  Hydraulic systems are the lifeblood of critical machinery. The reliability of every hydraulic fitting directly impacts system safety and performance. During installation and maintenance, a deceptively simple question arises: When tightening a hydraulic fitting, should you trust the precise click of

  Product News March 10, 2026
• How SAE Flange Face Seals Conquer Ultra-High Pressure: A Technical Deep Dive by RUIHUA HARDWARE

  ing increasingly critical. From deep-sea exploration to heavy-duty metal-forming presses, these applications push hydraulic connections to their absolute limits. The reliability of the entire system hinges on one crucial component: the seal.

  Product News March 03, 2026
• The Ultimate Metal-to-Metal Seal: How 24°/74° Conical Sealing Redefines Industrial Reliability

  In extreme environments of high temperature, high pressure, and corrosion, traditional sealing methods often fail. Enter conical sealing technology—where metal meets metal in a direct, engineered union. This is the hardcore solution for absolute containment

  Product News February 24, 2026
• The "Elastic Magic" of Flat Sealing: O‑Rings & Gaskets – The Silent Guardians of Industry

  Brought to you by RUIHUA HARDWARE – Your Trusted Partner for Sealing Solutions & Precision HardwareBeneath the roar of machinery, a silent form of "magic" is constantly at work. It’s not a spell from a storybook, but the precise performance of flat sealing technology.

  Product News February 17, 2026
• The Ultimate Guide to Solving Hydraulic Quick Coupler Mismatch | RUIHUA HARDWARE

  Are you struggling with persistent hydraulic issues that hamper your productivity?A persistent hiss or drip of hydraulic fluid at connection points, creating mess and waste?Costly downtime during maintenance because new couplers won't fit the old ones?

  Product News February 03, 2026
• Stop Hydraulic Leaks! 4 Root Causes of O-Ring Face Seal Failure & RUIHUA HARDWARE's Solutions

  Is a persistent leak at a hydraulic tube fitting draining your productivity and budget? You've replaced the O-ring and tightened the joint, yet that telltale seepage remains.This isn't mystery—it's a solvable engineering challenge. Over 80% of face seal failures stem from four core culprits.

  Product News January 27, 2026