JLCMC Blog

Seals & Fittings

O-Ring Applications in Mechatronic Systems: Design and Selection Guide

An O-Ring in a mechatronic system does more than stop fluid from escaping. It may preserve pneumatic pressure, maintain vacuum holding force, protect a sensor from coolant, contain liquid around power electronics or keep a dispensing process repeatable. This matters because mechatronic equipment connects mechanical movement with electronics, sensors and automated control. A small sealing problem can therefore become a motion problem, a measurement problem or even a system shutdown. A leaking pneumatic......

Aug 14, 2026

Seals & Fittings

O-Ring Material Guide: NBR, FKM, EPDM, Silicone and FFKM

Choosing an O-Ring material is not simply a choice between "rubber" and "better rubber." The seal must remain flexible, chemically stable and mechanically supported throughout the actual operating cycle. A material that performs well in mineral oil may fail in steam. Another may tolerate high temperature but become too stiff during a cold startup. Even within the same polymer family, different compounds can deliver different hardness, compression set, cleanliness and service life. This guide compares ......

Aug 14, 2026

Seals & Fittings

O-Ring Size Guide: How to Measure and Choose the Right Size

An O-Ring can have the correct material, suitable hardness and excellent chemical resistance—and still leak because its dimensions are wrong. Selecting the right O-Ring size begins with three measurements: inside diameter, cross-section and outside diameter. The arithmetic is simple. The engineering decision is not. Manufacturing tolerances, groove geometry, installation stretch, operating pressure and the condition of the old seal can all change which size is actually suitable. This O-Ring size guide......

Aug 14, 2026

Seals & Fittings

O-Ring Guide: Types, Materials, Sizes and Applications

An O-Ring is a circular sealing element with a round cross-section. Installed in a properly designed groove, it is compressed between two mating surfaces to prevent liquid or gas from passing through the joint. The design could hardly be simpler, yet the O-Ring is used in everything from household fittings and automotive systems to pneumatic cylinders, vacuum equipment, industrial robots and semiconductor machinery. That small ring quietly prevents leaks, protects components and keeps pressure where i......

Aug 14, 2026

Power Transmission

Main Types of Servo Motors: AC, DC, and Everything in Between

1. Introduction By leveraging closed-loop feedback to precisely control position, velocity, and torque, servo motors serve as the backbone of modern automation. Yet, application success hinges on matching the right architecture to your load requirements—a task made challenging by the sheer variety of servo motor types available today. In this article, we map motor technology to application requirements through a practical taxonomy covering electrical topology, mechanical construction, performance spec......

Aug 13, 2026

Power Transmission

Quiet Servo Motors: How to Select Low-Noise Servo Motors for Precision Automation

Noise has quietly become a specification. Medical device makers, semiconductor equipment builders, and packaging OEMs now arrive at the design review with a dB(A) target alongside torque and settling time — and the motion axis is usually the first thing they point at. This guide is written for engineers and buyers specifying industrial AC and brushless servo systems, covering small to medium power ranges commonly used in precision automation equipment. It is not about RC hobby servos: the plastic-gear......

Aug 13, 2026