MS Flareless Fittings: Precision Solutions for High-Pressure Applications

MS flareless fittings represent Military Standard specifications and are designed for high-pressure, high-vibration environments where reliability is non-negotiable. These precision-engineered fluid connectors have become the industry standard in aerospace, military, and demanding industrial applications.

Understanding MS Flareless Technology

Unlike traditional flare fittings that require tube ends to be expanded outward, MS flareless fittings create their seal through a compression design. The ferrule—a precision-machined sleeve—bites into the tube's outer surface when tightened, creating both a mechanical grip and a leak-tight seal without any flaring operations.

This design eliminates the variables associated with flaring operations, delivering consistent, reliable connections that meet the exacting standards aerospace and military applications demand.

Key Advantages for Demanding Applications

High-Pressure Performance

MS flareless fittings are engineered to handle extreme pressures, often exceeding 3,000 PSI, while maintaining their integrity through thousands of pressure cycles. The bite-type connection created by the ferrule mechanically interlocks with the tube, creating a connection that performs reliably under the most challenging conditions.

Installation Reliability

Proper tube preparation—clean, square cuts and deburring—combined with correct torque specifications ensures technicians can achieve consistent connections every time. This translates to reduced installation time and greater confidence in system integrity.

Vibration Resistance

Aircraft and military vehicles subject fittings to constant vibration. The mechanical bite of MS flareless ferrules holds firm where other connection types may loosen over time, making these fittings ideal for applications where vibration is a constant factor.

Material Options for Specific Requirements

MS flareless fittings are available in multiple materials to address different operating environments: • Stainless steel 316/316L for corrosion resistance and high-temperature applications • Aluminum where weight reduction is critical • Carbon steel for general hydraulic applications Selecting the appropriate material ensures compatibility with system fluids, operating temperatures, and environmental conditions.

Standards Evolution: MS to AS

The aerospace industry continues to evolve, and standards have evolved accordingly. AS (Aerospace Standard) specifications like AS21902 maintain compatibility with MS flareless systems while incorporating updated specifications and materials. This ensures existing infrastructure remains viable while benefiting from modern engineering advancements.

Applications Across Industries

While developed for military and aerospace use, MS flareless fittings have found applications wherever high reliability is essential: • Aerospace hydraulic systems • Military vehicles and equipment • Ground support equipment (GSE) • Industrial hydraulics requiring superior reliability • Mobile hydraulic systems subject to vibration

Custom Solutions and Technical Support

At Aerocom, we provide fluid connectors and hoses that comply with all industry standards through our AS9120 quality system, including MS flareless fittings that meet or exceed military specifications.

As well, Aerocom can build just about any custom fittings and flex connectors. If you can’t find see what you are looking for, please contact us so we can work together to find a solution for your requirements.

Our knowledgeable, engineer-supported team provides solutions for the most demanding industry applications. We stock, assemble, and test MS flareless fittings for Ground Support Equipment applications to meet our extensive quality assurance programs. Speed of quote and quick product turnaround has built our reputation as leaders in specialty fluid connectors that exceed our customers' expectations.

Quality Assurance

All our products undergo quality checks prior to shipping. For aerospace and military clients, we provide fluid connectors that comply with all industry standards through our AS9120 quality system. Documentation and certificates are controlled per our quality management systems. When your application demands the reliability of Military Standard fittings, Aerocom delivers precision-manufactured solutions backed by technical expertise.

Contact Aerocom Specialty Fittings today to discuss your MS flareless fitting requirements. Our team is ready to provide engineered solutions that address your specific fluid connector challenges.