Underwater Electrical Junction Box Solutions

NEMACO™ is a leader in Performance Class, submersible waterproof electrical enclosures, cabinets & junction boxes  designed to withstand the most demanding environments. Our high-quality enclosures, crafted from 304/316L stainless steel alloys, powder-coated aluminum alloys,  and FRP / GRP (fiberglass) materials, ensure exceptional durability and long-lasting protection for critical electrical equipment.

Standard Materials & Protection Ratings forSubmersible Junction Boxes & Enclosures

There are industry standards for performance classwaterproof submersible enclosures for industrial applications. The enclosures must be fabricated fromstrong materials and not cheap plastic designs that will be prone to be easilydamaged in most industrial environments. Projects engineers and designers shouldspecify only strong, heavy duty waterproof enclosures with quality durablegaskets.

Waterproof Submersible Enclosure - Key Specifications

  • Heavy-duty materials: stainless steel, heavy wall aluminum and FRP (fiberglass).
  • Gasket Seal: Flame resistant UL Listed Silicone Rubber design for cold & hot environments
  • NEMA 6, 6P and IP67, IP68-Rated for application & depth of submersion

Waterproof Submersible Enclosure Applications

Waterproof enclosures fulfill a wide range of purposes. They can guard sensitive electronic equipment, or they might serveas electrical outlet boxes or electrical junction boxes inharsh environments. Many are designed to work as either indoor or outdoorelectrical boxes, with features that allow them to excel in either role. Anywhere that water hazards such as wet weather or hose spray threatenelectrical and electronic equipment, waterproof enclosures are must-haves.

NEMA 4X vs NEMA 6P (IP67,IP68) Waterproofing Comparison

There are other forms of waterproofing options for example NEMA4X enclosures that are manufactured primarily from stainless steel. The NEMA 4X enclosure are rated from waterspray resistance but not water submersion. NEMA 4X enclosures are useful and provide protection for most electricalswitch gear and telecommunication network server rack applications. Sometimes customers prefer NEMA 6P (IP67,IP68) enclosure and junction boxes because the enclosure materials and design construction provide better sealing capability then the NEMA 4X rating. Typically NEMA 4 / 4X enclosures have softer seals (closed cell foam) and the NEMA 6P (IP67,IP68) gasket seal are solid rubber. Therefore the hard rubbers are more durable for all applications.Therefore, customers prefer the submersible enclosure designs since theenclosures provide more water resistance and much more protection for criticalelectrical equipment and network systems.

Enclosure Customization & Hardware Options

Nemaco can offer the following hardware and water sealingoptions for customers.

  • Conduit Hubs (NPT, FPT, FF, etc.)
  • Cable Glands (NPT, Jam Nut Design)
  • Piping & Fittings (Misc. pipe connections)
  • Door Floating Hinges (for NEMA 6P Enclosures)
  • Roxtec Industrial Seals (NEMA 4, 4X, 6, 6P)
  • Alternate Gasket Solutions (for other chemical resistance)
  • Door Screw Captive Hardware (for bolts)
  • Clear Windows (for non-UL applications)
  • Dual Rated N6P-N4X Seals for Enclosure & Cabinets

Call Nemaco for more information.

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KEY FEATURES & ADVANTAGES

ECOTM CLASS - STAINLESS SERIES

WALL MOUNT - NEMA 6P JUNCTION BOX

FOLDED LIFT-OFF COVER

STAINLESS STEEL (304 / 316L) ALLOYS

ELECTRONIC PASSIVATION CLEANED
100% WATERPROOF PROTECTION
100% QUALITY CONTROL TESTED
TEST SUBMERSION: 15 ft (5 m)
TEST PORT 3/8 - NPT & PLUG
INTERIOR PLATE, WHITE (Option)
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wallmount-underwater-electrical-junction-box-solutions

KEY FEATURES & ADVANTAGES

PERFORMANCE CLASS - STAINLESS SERIES

WALL MOUNT - NEMA 6P JUNCTION BOX

RUGGED & HEAVY DUTY DESIGN

STAINLESS STEEL (304 / 316L) ALLOYS

ELECTRONIC PASSIVATION CLEANED
100% WATERPROOF PROTECTION
100% QUALITY CONTROL TESTED
TEST SUBMERSION: 15 ft (5 m)
TEST PORT 3/8 - NPT & PLUG
INTERIOR PLATE, WHITE (Option)
☆ Email For Pricing & Availibility
ip67&68-junction-box-solutions

KEY FEATURES & ADVANTAGES

ECOTM CLASS - STAINLESS SERIES

WALL MOUNT - IP67,IP68 JUNCTION BOX

FOLDED HINGED OR LIFT-OFF COVER

STAINLESS STEEL (304 / 316L) ALLOYS

ELECTRONIC PASSIVATION CLEANED
100% WATERPROOF PROTECTION
100% QUALITY CONTROL TESTED
TEST SUBMERSION: 15 ft (5 m)
TEST PORT 3/8 - NPT & PLUG
INTERIOR PLATE, WHITE (Option)
☆ Email For Pricing & Availibility
floormount-underwater-electrical-junction-box-solutions

KEY FEATURES & ADVANTAGES

PERFORMANCE CLASS - ALUMINUM SERIES

WALL MOUNT - NEMA 6P ENCLOSURE

ALUMINUM SERIES (6061 / 5052), ALLOYS

ELECTRONIC PASSIVATION CLEANED

RUGGED & HEAVY DUTY DESIGN
100% WATERPROOF PROTECTION
100% QUALITY CONTROL TESTED
TEST SUBMERSION: 15 ft (5 m)
TEST PORT 3/8 - NPT & PLUG
INTERIOR PLATE, WHITE (Option)
☆ Email For Pricing & Availibility
custom-underwater-electrical-junction-box-solutions

KEY FEATURES & ADVANTAGES

CUSTOM - NEMA 6P WITH WINDOW

MATERIALS AVAILABLE

STAINLESS STEEL (304 / 316L) ALLOYS

POLYCARBONATE CLEAR WINDOW

FIBERGLASS (FRP / GRP)
100% WATERPROOF PROTECTION
100% QUALITY CONTROL TESTED
TEST SUBMERSION: 15 ft (5 m)
TEST PORT 3/8 - NPT & PLUG
INTERIOR PLATE, WHITE (Option)
PIPE FITTING (Option)
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wallmount-underwater-electrical-junction-box-solutions

KEY FEATURES & ADVANTAGES

PERFORMANCE CLASS - FRP SERIES

WALL MOUNT - NEMA 6P ENCLOSURE

POLYCARBONATE CLEAR WINDOW

EPOXY GELCOAT COATING - UV PROTECTION

FRP - FIBERGLASS REINFORCED PLASTIC

ELECTRONIC PASSIVATION CLEANED
100% WATERPROOF PROTECTION
100% QUALITY CONTROL TESTED
TEST SUBMERSION: 15 ft (5 m)
TEST PORT 3/8 - NPT & PLUG
INTERIOR PLATE, WHITE (Option)
☆ Email For Pricing & Availibility

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NEMACO™ is a trusted leader in Performance Class submersible waterproof electrical enclosures, cabinets, and junction boxes designed to withstand the harshest and most demanding environments. Our high-performance enclosures provide superior protection for critical electrical and electronic equipment used in industries such as marine, oil and gas, wastewater treatment, and industrial automation. Engineered for long-lasting durability, our enclosures are crafted from premium-grade materials including 304 and 316L stainless steel alloys, powder-coated aluminum alloys, and FRP/GRP (fiberglass-reinforced plastic). These corrosion-resistant materials ensure exceptional waterproof performance and long-term reliability in extreme conditions. Whether you need NEMA-rated or IP-rated enclosures, NEMACO™ offers rugged, weatherproof solutions that meet your toughest requirements.

NEMA 6P - rated enclosures and junction boxes

Whether you're protecting sensitive equipment in industrial, commercial, or outdoor settings, our enclosures are built to deliver unmatched durability and performance. Explore below to discover the benefits of NEMA 6P-rated enclosures and how to select the best option for your project needs.

  • Complete protection against falling debris, airborne dust, and other environmental particles
  • Watertight design that resists rain, sleet, snow, splashing, and direct hose-downs
  • Reliable defense against water ingress from extended submersion, up to manufacturer-specified limits
  • Engineered for both indoor and outdoor environments, with a strong focus on rugged outdoor performance

Discover everything you need to know about enclosure protection in our comprehensive guide to NEMA enclosure ratings. For more targeted insights, explore our NEMA 6P applications guide, where we highlight real-world uses of this highly durable enclosure standard. NEMACO provides high-performance NEMA 6P enclosures built for tough environments and critical applications.

These enclosures are constructed using rugged materials like polycarbonate and die-cast aluminum, offering excellent resistance to water, dust, and environmental wear. Precision-mated parts and waterproof gaskets ensure a secure, watertight seal, while optional features such as mounting flanges add flexibility for various installations. All NEMACO NEMA 6P enclosures are UL Listed, providing you with confidence in their quality and reliability. For added convenience, NEMACO offers cost-effective customization through in-house CNC machining and digital printing, with instant quotes available to streamline your project timeline. Choose NEMACO for durable, customizable, and dependable NEMA 6P enclosure solutions.

Explore our full range of Nemaco waterproof junction boxes, control panel enclosures, and custom solutions to safeguard your equipment inany environment.

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