In food processing plants, seafood facilities, and chemical lines, load cells are often exposed to washdown water, cleaning chemicals, salt, and condensation. In these environments, the real question is not just capacity. It is whether the sensor can keep giving stable readings after repeated cleaning and moisture exposure.
An IP68 stainless steel load cell is typically selected for this kind of job. It combines a sealed design for dusty and wet conditions with a stainless steel body that is better suited to corrosive or hygienic environments. That is why these load cells are common in seafood processing, meat processing, tank weighing, hopper weighing, and other wet industrial installations.
If you are still defining the environment first, Lab Load Cell’s guide to selecting a load cell for harsh applications is a useful companion to this page. If you are comparing several sensor types, start with Lab Load Cell’s broader guide on how to choose the right load cell for industrial weighing and tension applications.
What Is an IP68 Stainless Steel Load Cell?
An IP68 stainless steel load cell is a load cell designed for places where dust, washdown cleaning, water exposure, and corrosive conditions are part of normal operation. In practical terms, the “6″ means dust-tight protection, and the “8″ means the sensor is built to handle prolonged water exposure within its rated limits. For engineers and buyers, the important point is simple: this is a wet-duty load cell, not a standard dry-environment sensor.
Stainless steel adds a second layer of value. According to Worldstainless, stainless steel resists corrosion because of a passive, chromium-rich oxide film on the surface. That passive layer is why stainless steel is so widely used where cleaning, humidity, chlorides, or food contact are involved.
Manufacturers of industrial load cells often combine those two ideas. A current Flintec product page shows an all-stainless-steel compression cell with IP68 protection and complete hermetic sealing. Minebea Intec also lists stainless steel, hermetic welding, and IP68 on process-vessel load cells, including immersion-rated designs.
What the terms mean in buying language
| Term | What it means for the buyer |
|---|---|
| IP68 | 6 means dust tight; 8 means protection during continuous immersion under defined conditions |
| Stainless steel | Better corrosion resistance and easier cleaning than coated non-stainless bodies |
| Hermetically sealed | Moisture is kept out of the sensitive internal sensing area more reliably |
| Waterproof load cell | A practical buyer term, but the real check is the actual sealing and test data |
Key Features of Stainless Steel Waterproof Load Cells
The value of a stainless steel waterproof load cell comes from the way material, sealing, and serviceability work together. For buyers, that usually matters more than any one headline spec.
| Feature | Why it matters in wet or corrosive applications |
|---|---|
| Stainless steel body | Helps resist rust, salt spray, humidity, and cleaning chemicals |
| IP68 protection | Better suited to washdown and moisture-prone zones than dry-duty sensors |
| Hermetic sealing | Reduces the chance that water reaches the strain gauge area |
| Chemical cleaning resistance | Important when detergents, sanitizers, or foam cleaning are part of the process |
| Long service life | Fewer replacements, less downtime, and lower maintenance cost over time |
Stainless steel also helps with cleanability. Worldstainless says stainless steel is the dominant material in food and beverage processing equipment, and Outokumpu describes stainless steel as corrosion resistant, strong, and easily cleaned for food processing, handling, and storage. That is the real reason stainless steel shows up so often in hygienic weighing projects.
In food applications, surface finish matters too. A smoother, easier-to-clean surface is easier to sanitize and less likely to trap residue. Some manufacturers even offer electro-polished surfaces to improve hygiene in food processing and pharmaceutical environments. For a compact example inside the Lab Load Cell range, the HBB Bellows Load Cell Stainless Steel Welded Seal combines stainless construction, welded sealing, and IP68 protection for wet-duty beam applications.
When Stainless Steel Is the Better Choice for Wet and Corrosive Applications
This section is not meant to say stainless steel replaces alloy steel in every project. Alloy steel remains widely used across hopper scales, tank scales, feeders, and general industrial weighing. The point here is narrower: when the environment includes water, washdown, chlorides, or corrosive cleaning, stainless steel usually becomes the safer engineering choice.
| Condition | Why stainless steel is often preferred | Where alloy steel still fits |
|---|---|---|
| Frequent washdown | Better corrosion resistance and easier cleaning | Better when the sensor is outside the washdown zone |
| Salt or brine exposure | More suitable for chloride-prone environments | Better in dry, protected structures away from corrosive contact |
| Hygienic food or pharma area | Easier to specify for wet sanitary zones | Still common in protected substructures or dry support areas |
| General dry industrial weighing | Not always necessary | Widely used and practical |
| Protected indoor hopper or platform | Use when the environment truly requires it | Often still the standard choice |
The biggest mistake is assuming the body material alone solves the problem. Stainless steel is not magic, and it is not immune to chlorides. Worldstainless notes that corrosion problems often involve crevice corrosion, pitting, and stress corrosion cracking, especially in chloride or acid conditions. That is why grade selection and sealing quality still matter.
The practical rule is simple:
- Choose stainless steel first when your process includes water, salt, detergents, or steam cleaning.
- Use alloy steel where the weighing point stays dry, protected, and outside corrosive exposure.
Applications of IP68 Load Cells
IP68 load cells are not just for one kind of machine. They are used anywhere the weighing point sits inside a harsh hygiene or corrosion environment.
| Application | Main risk | Why IP68 stainless steel helps |
|---|---|---|
| Seafood processing | Salt, brine, splash, and chloride exposure | Better resistance to corrosion and easier cleaning after washdown |
| Meat processing | Hygienic cleaning, foaming agents, and hose-down cycles | Stainless surfaces and hermetic sealing support sanitation routines |
| Tank weighing | Moisture, condensation, chemical cleaning, and process spill | Stable signal protection and longer service life around vessels |
Seafood processing
In seafood plants, the environment is often harsher than it looks. Salt residues and brine can attack exposed hardware quickly, especially around joints, fasteners, and cable entries. For that reason, an IP68 load cell for seafood processing should be judged by sealing quality, corrosion resistance, and the way the cable exits the housing.
This is where stainless steel is a clear advantage. Outokumpu’s marine pages describe stainless steel as suitable for harsh marine environments, with high corrosion resistance and long service life. That same logic transfers well to seafood handling, where chloride exposure and wet cleaning are constant.
Meat processing
A washdown load cell for meat processing has a different challenge: sanitation. The equipment has to survive repeated cleaning while also remain easy to clean. Worldstainless notes that stainless steel is widely used in food and beverage manufacturing and processing, and Outokumpu emphasizes that stainless steel is corrosion resistant and easily cleaned.
For procurement teams, that means the load cell should be specified together with the mounting hardware, cable protection, and cleaning method. If the supplier only quotes the sensor body and ignores the installation kit, the project is incomplete. For broader hygienic application context on this site, see Lab Load Cell’s Food and Pharma industry page.
Tank weighing
A stainless steel tank weighing load cell is often the best fit when the vessel is exposed to cleaning chemicals, condensation, or process spills. On Lab Load Cell’s own tank weighing system page, stainless steel weighing modules are specifically recommended for humid or corrosive environments.
Tank projects also benefit from stable mounting. If the load path is wrong, even a good waterproof load cell will drift or show corner-load errors. For that reason, the mounting module and the sensor should be chosen together. Lab Load Cell’s guide on How to Select a Tank Weighing Module: The Engineer’s 5-Step Guide is a strong internal follow-up for engineers evaluating installation method, restraint hardware, and module type. For chemical process environments, Advanced Load Cell Solutions for Chemical Tanks and Silos also supports the case for stainless steel and hermetically sealed protection.
Available Models and Custom Options
Buyers usually want a load cell, but they actually need a matched combination of sensor, sealing, cable, and mounting hardware. The right specification depends on the machine and the environment.
| Parameter | Common options to specify | Why it matters |
|---|---|---|
| Capacity | Match the dead load, live load, and overload margin | Prevents overload and improves repeatability |
| Output | Analog mV/V, 4-20mA, or digital, depending on the controller architecture | Must match the weighing indicator or PLC |
| Cable length | Standard length or custom length | Reduces splicing, signal loss, and installation friction |
| Protection rating | IP68, or higher where the cleaning method demands it | Must match the washdown intensity |
| Connector | Fixed cable, sealed connector, or service-friendly plug | Affects maintenance and replacement speed |
| Mounting | Direct mount, module-based, compression, S-beam, or single-point | Must match the actual load path |
Labirinth Load Cell already has several relevant internal targets for this topic. For compact wet-duty beam applications, HBB Bellows Load Cell Stainless Steel Welded Seal is a useful example. For compact compression points, LCD806 Stainless Steel Compression Miniature Load Cell provides IP68 stainless steel construction. For vessel and level applications, LCD805 stainless steel low profile disk load cells can support compact installations.
If the project needs a complete installation rather than a bare sensor, the weighing module category is the right internal hub. For tank, hopper, and silo projects, GL Hopper Tank Silo Batching and Weighing Module and WM603 Double Shear Beam Stainless Steel Weigh Module are especially relevant internal product links.
What to ask your supplier before you order
- What is the real working load, including the dead weight of the platform or tank?
- What cleaning chemicals, water pressure, and washdown frequency will the cell face?
- Is the environment salty, humid, or exposed to chlorides?
- Which output and connector style does the controller require?
- Is a mounting kit, anti-lift device, or hygienic module included?
- Can the supplier show IP protection, sealing, and calibration documentation?
FAQ
Is IP68 enough for high-pressure washdown?
Often yes, but not always. IP68 helps, but the real answer depends on water pressure, temperature, cleaning chemicals, and whether the cable entry and mounting hardware are also sealed correctly. Some applications may need a higher protection class or a hygienic module instead of a bare sensor.
Does stainless steel mean the load cell will never corrode?
No. Stainless steel resists corrosion because of its passive chromium-rich film, but it is still affected by chlorides, acid conditions, poor weld quality, and crevice traps. Grade selection and sealing still matter.
When should I choose a hermetically sealed load cell?
Choose hermetic sealing when moisture, foam cleaning, condensation, or salt exposure is part of the normal operating environment. It is especially useful when downtime from corrosion or signal drift is expensive.
Can one model work for seafood, meat, and tank weighing?
Sometimes, but not always. The cleaner the environment and the simpler the mounting, the easier it is to use one platform across multiple applications. In real projects, the cable, connector, mounting kit, and protection rating often decide the final model.
Request a Spec Review
If you are selecting an IP68 stainless steel load cell for seafood processing, meat processing, tank weighing, or another wet industrial application, send us the application details first: capacity, mounting photos, output type, cable length, cleaning method, and target protection rating.
We can help you narrow the choice between a waterproof load cell, a corrosion resistant load cell, a washdown load cell, and a hygienic module-based solution before you request pricing. If the application already involves tanks, hoppers, or silos, include whether you need a bare sensor or a full weighing module, because that changes the recommendation.
Post time: Aug-12-2026
