IP68 Sealing Modules: Applications Across Eight Major Industries

Thanks to their capabilities for complete dust protection (IP6X) and continuous immersion protection (IPX8), IP68 sealing modules have become critical protective components across numerous demanding industrial and infrastructure sectors. The following is a detailed breakdown of typical application scenarios, technical requirements, and representative equipment for TST SEAL sealing modules across eight major industries:

1. 1. Marine and Shipbuilding Engineering

Application Scenarios:

Ship engine rooms, ballast tanks, and deck cable penetrations;

Bases of offshore wind turbine towers and substation junction boxes;

Underwater robots (ROVs/AUVs), submersible pumps, and sonar equipment.

Technical Requirements:

Salt spray corrosion resistance (ISO 12944 C5-M);

Materials: EPDM + 316L Stainless Steel;

Certifications: DNV GL, ABS, CCS, IMO.

Representative Equipment:

Submarine optical cable splice boxes, offshore platform instrumentation penetrators, marine propulsion motor junction boxes.

1. 1. Energy and Power

Application Scenarios:

Underground cable trenches and wall penetrations in GIS rooms within substations;

Tailrace pipes and gate control cabinets in hydroelectric power plants;

Outdoor enclosures for PV inverters and energy storage battery compartments (protection against heavy rain and condensation);

Electric vehicle (EV) charging piles (particularly at underground or coastal sites).

Technical Requirements:

Fire resistance rating (e.g., UL 94 V-0);

Weather resistance (-40°C to +85°C);

Protection against rodent gnawing.

Representative Equipment:

Underground ring main units (RMUs), smart electricity meter boxes, DC combiner boxes.

III. Rail Transit

Application Scenarios:

Pump rooms and signal equipment cabinets within subway tunnel sections;

Cable penetrations at expansion joints on high-speed rail bridges;

Trackside communication base stations and turnout control cabinets.

Technical Requirements:

IP68 + EN 45545-2 (Flame retardant, low smoke, halogen-free);

Vibration resistance (5–500 Hz, 2g);

Oil and grease resistance (environments involving rail lubricants). Representative Equipment:

Trackside AP Cabinets, Under-train Junction Boxes, Tunnel Lighting Control Boxes.

1. 1. Industrial Automation & Manufacturing

Application Scenarios:

CIP/SIP Cleaning Zones in Food & Beverage Plants (High-temperature, High-pressure Water Jets);

Electrophoresis/Spray Lines in Automotive Manufacturing;

Sensors Surrounding Metallurgical Pickling Tanks and Chemical Reactors;

High-Purity Water Systems in Semiconductor Cleanrooms.

Technical Requirements:

Chemical Resistance (NORSOK M-710);

FDA/USP Class VI Certification (Food & Pharmaceutical);

Stainless Steel Surface Finish Ra ≤0.8μm (Anti-bacterial).

Representative Equipment:

Cleaning Robot Joint Motors, Liquid Level Gauge Junction Boxes, Filling Machine Control Units.

1. 1. Smart Cities & Infrastructure

Application Scenarios:

Outdoor Power Interfaces for Smart Streetlights and 5G Micro-base Stations;

Cable Wall Penetrations in Urban Underground Utility Tunnels;

Aeration Tanks and Sludge Pumping Stations in Wastewater Treatment Plants;

Smart Monitoring Terminals for Fire Hydrants.

Technical Requirements:

Anti-fouling (Mold and Algae Resistance);

UV Resistance (No Chalking after 1000h QUV Exposure);

Anti-theft Design (Tamper-resistant Structure).

Representative Equipment:

Smart Manhole Cover Sensors, Outdoor LED Power Drivers, Water Quality Monitoring Buoys.

1. 1. Data Centers & Communications

Application Scenarios:

Outdoor Optical Cross-Connect Cabinets (Hybrid Fiber + Power Entry);

Bottom Cable Entry Ports for 5G AAU/RRU Equipment;

Terminal Boxes at Submarine Cable Landing Stations;

Edge Computing Nodes (Deployed in Field Environments).

Technical Requirements:

IP68 + EMC Shielding (>60 dB);

Low Insertion Loss (for Fiber Optic Interfaces);

UL 2043 (for Use in Air-Handling Spaces).

Representative Equipment:

Fiber Optic Distribution Frames, Microwave Backhaul Equipment, FTTH Splitter Boxes.

VII. Specialized Equipment & Defense

Application Scenarios:

Cable Penetrations in Watertight Compartments of Naval Vessels;

Outdoor Interfaces for Field Communication Vehicles and Radar Stations;

Electronic Control Systems for Diving Equipment;

Explosion-proof Junction Boxes for Ammunition Depots. Technical Requirements:

MIL-STD-810G (Shock, Vibration, Salt Fog);

ATEX/IECEx (Explosion Protection);

EMI/RFI Shielding (>80 dB).

Representative Equipment:

Diving Navigation Devices, Shipborne Radar Turntables, Field Power Distribution Units.

VIII. Consumer Electronics & High-End Devices (Indirect Applications)

Although the complete device may be rated IP68, its interior often incorporates miniature IP68 sealing modules:

Smartwatch Crown/Charging Contact Seals;

Action Camera Lens Mount O-rings;

Electric Toothbrush Charging Port Silicone Plugs.

Note: Consumer-grade IP68 ratings are typically limited to freshwater, static conditions, and short durations; they are not suitable for industrial environments.

Industry Selection Quick Reference Guide

Industry | Key Additional Requirements | Recommended Materials

Marine Engineering | Salt Fog Resistance, Biofouling Resistance | EPDM + 316L

Food & Pharmaceuticals | FDA Compliance, Easy-to-Clean | White EPDM / Silicone

Rail Transit | Flame Retardant, Low Smoke | LSZH EPDM

Chemical Industry | Acid/Alkali Resistance, Solvent Resistance | FKM or PTFE Composite

Defense & Aerospace | EMI Shielding, Shock Resistance | Conductive Rubber + Stainless Steel

The Core Value of TST SEAL IP68 Sealing Modules Lies In:

✅ Ensuring the continuous operation of equipment in extreme environments—such as underwater, heavy rain, high humidity, or wash-down scenarios;

✅ Preventing safety incidents, data loss, or production interruptions caused by water ingress;

✅ Meeting the mandatory entry thresholds for major global industry certifications.

Selection Tip: Always verify the specific IP68 test parameters provided by the manufacturer (e.g., “1.5m/30min” or “5m/1h”) and ensure they align with your actual operating conditions—IP68 is not a generic label, but a customized commitment.

If you require detailed technical specifications or solutions for a specific industry, please feel free to contact TST SEAL via email.