Vanishing Expertise: How the Disappearing Cable Gland Knowledge Base Is Putting American Plants at Risk

For decades, American industrial facilities operated on a form of tacit knowledge that never appeared in any training manual. Senior electricians and maintenance engineers carried in their heads a working understanding of which cable glands held up in which environments, how to read early signs of seal fatigue, and why a particular brand of armored gland was never the right choice for a certain chemical washdown zone. That knowledge was earned through years of trial, correction, and direct mentorship.

Today, that knowledge is walking out the door—one retirement at a time.

The so-called skills gap in American manufacturing has received considerable attention in recent years, but most of that conversation has centered on broad trades: welding, machining, electrical work in general terms. Far less attention has been paid to the granular, component-level expertise that keeps facilities running safely. Cable gland selection and installation may seem like a narrow subject, but the consequences of getting it wrong are not narrow at all. Incorrect gland sizing, improper sealing compound application, or a failure to account for thermal expansion in a high-cycle environment can result in ingress failures, arc events, or regulatory violations that shut down entire production lines.

The question plant managers should be asking is not simply whether their team knows how to install a gland. The more pressing question is whether anyone on staff knows why the current specification exists—and what happens if it changes.

The Shape of the Problem

The workforce dynamics driving this issue are well documented. The Bureau of Labor Statistics has consistently reported that a substantial portion of the skilled trades workforce is concentrated in the 55-and-older demographic. In industrial electrical and instrumentation roles, that concentration is even more pronounced. Many facilities that have operated for twenty or more years built their maintenance protocols around the judgment of a handful of experienced individuals who are now approaching or past retirement age.

When those individuals leave, they take with them something that no job posting can easily replace: contextual fluency. A new hire may understand the general principles of IP-rated enclosures, but without site-specific experience, they are unlikely to recognize that a particular conduit run near the press floor has historically required a different gland body material due to vibration harmonics from adjacent machinery. That kind of knowledge is not codified. It lives in the institutional memory of people who were there.

The result is a workforce that is technically credentialed but operationally underprepared for the specific demands of the facility it serves.

Why Cable Glands Are Particularly Vulnerable

Cable glands occupy a peculiar position in the maintenance ecosystem. They are small, inexpensive relative to the systems they protect, and visually unassuming. As a result, they rarely receive the training attention that major equipment components do. Facilities invest heavily in training programs for PLCs, variable frequency drives, and hydraulic systems. Cable gland installation, by contrast, is often treated as something a technician simply picks up on the job.

That assumption worked reasonably well when experienced mentors were present to catch errors in real time. It works considerably less well when the mentors are gone and the technicians learning on the job are making decisions in isolation.

The consequences compound over time. An improperly torqued gland may not fail immediately. A mismatched seal material may hold for months before a chemical exposure event reveals the incompatibility. By the time the failure surfaces, the connection between the installation error and the outcome is difficult to trace—especially if the technician who performed the original work has since moved on.

Structural Responses: What Plant Managers Can Actually Do

Addressing a skills gap of this nature requires more than scheduling a training session. It demands a deliberate, multi-layered approach that treats knowledge as an asset to be actively managed.

Formalize knowledge capture before it leaves. The most immediate priority for any facility with experienced staff approaching retirement is structured knowledge extraction. This is not a casual process. It requires dedicated time with senior technicians to document not just what they do, but why they do it. Site-specific installation standards, material selection rationale, and historical failure records should all be compiled into accessible reference documents. These records become the foundation of a living technical library that new staff can consult when senior guidance is no longer available.

Establish tiered competency standards for gland-related tasks. Not every technician needs to be an expert in every type of cable gland. However, every facility benefits from having clearly defined competency levels—who is authorized to specify glands for new installations, who can perform routine replacements, and who must escalate to a specialist. Creating these tiers formalizes accountability and reduces the likelihood that consequential decisions are made by personnel who lack the requisite background.

Pursue manufacturer and distributor training partnerships. Many cable gland manufacturers and industrial distributors offer technical training resources that facilities chronically underutilize. These programs range from on-site seminars to online certification modules and can be tailored to specific product lines or application environments. Engaging a trusted supplier as a training partner is particularly valuable for smaller facilities that lack the internal resources to develop proprietary curricula.

Embed specification logic into procurement systems. One underappreciated strategy involves shifting knowledge from people into systems. When a facility's procurement platform or maintenance management software contains embedded specification logic—prompts that require technicians to confirm gland type, material compatibility, and IP rating before completing a work order—the decision-making burden on individual staff members is reduced. This is not a substitute for genuine understanding, but it functions as a meaningful safeguard during the transition period when institutional knowledge is being rebuilt.

Build mentorship structures into workforce planning. Where staffing allows, pairing less experienced technicians with senior staff on gland-related tasks creates an organic transfer mechanism. This requires intentional scheduling and a workplace culture that values knowledge sharing over speed. It is, admittedly, a longer-term investment. But facilities that begin this process before retirements occur rather than after will find themselves in a substantially stronger position.

The Broader Implication

It would be a mistake to view the cable gland skills gap as a problem unique to any single facility or region. It is a structural feature of the current industrial labor market, and it affects organizations of every size. What varies is how proactively individual plants choose to respond to it.

Facilities that treat this as someone else's problem—or assume that a new hire's general electrical training will be sufficient—are taking on risk they may not fully appreciate until a failure makes it visible. The cost of that failure, measured in downtime, regulatory exposure, and remediation, will almost certainly exceed the cost of the training and documentation investments that could have prevented it.

At VelxCa BelGland, we work with maintenance teams and procurement professionals navigating exactly these challenges. The technical demands of modern industrial cabling have not become simpler. If anything, the proliferation of specialized environments—hazardous locations, high-temperature zones, food-grade facilities—has made gland selection more consequential than ever. Ensuring that the people making those selections are adequately prepared is not a peripheral concern. It is a core operational responsibility.

The expertise gap is real. The question is whether your facility closes it on its own terms, or waits for the next equipment failure to close it for you.