Diver Magnet - 250
The Diver Magnet – 250 is the most powerful unit in our single-magnet range, engineered for demanding commercial diving operations. Delivering exceptional holding force relative to its size, it provides a secure anchoring point for divers working with pneumatic or hydraulic tools, in strong currents, or when managing multiple tools. Built with a high-strength neodymium pot magnet, stainless steel eye nut, and ergonomic stainless handle, it ensures maximum stability, reliable tool attachment, and controlled detachment—helping divers work safer, longer, and with greater precision in challenging subsea environments.
Pull Force: 250 kg · Magnetic face Ø: 78 mm · Grade: N48 · Coating: Epoxy-HDPE · Depth: proven in service to 150 m · Country of origin: South Africa
The Diver Magnet - 250 is a heavy-duty neodymium pot magnet rated at 250 kg pull force — engineered for demanding offshore operations including pipeline work, structural inspection, and heavy tool holding in strong currents. Manufactured by Diving Magnets (Pty) Ltd in South Africa with Epoxy-HDPE coating for corrosion resistance and 316 stainless steel hardware, this diver magnet is trusted by commercial diving professionals worldwide.
What is the Diver Magnet - 250 used for?
- Heavy tool holding during offshore pipeline repair and maintenance
- Structural steel inspection on offshore jackets and risers
- Securing welding equipment and cutting tools underwater
- Subsea construction support and diver positioning
- Deep-water inspection tasks in high-current environments
Features & Benefits
- 250 kg rated pull force — heavy-duty for demanding offshore operations
- Magnet sealed in epoxy and HDPE for continuous saltwater use
- 316 stainless steel eye nut and handle hardware — highly corrosion-resistant in marine environments
- Reinforced body design to maintain integrity in high currents
- Suitable for pipeline, structural, and offshore construction work environments
What surfaces does the Diver Magnet - 250 work on?
Works best on
- Mild steel and carbon steel (best performance — flat, clean surfaces)
- Cast iron structures and components
- Structural steel beams, columns, and plate
- Steel pipelines and risers
- Ship hulls and marine vessel steel
Reduces performance
- Rusted or corroded surfaces — rust and scale create an air gap that reduces pull force
- Painted or coated surfaces — coating thickness creates an air gap
- Curved surfaces — reduced contact area lowers effective pull
- Thin metal (under 5 mm) — insufficient material for full flux path
Will not work on
- Aluminium, brass, copper, and bronze (non-ferrous metals)
- Most austenitic stainless steels (304, 316) — little or no attraction, slightly magnetic only where cold-worked or welded
- Concrete, wood, plastic, fibreglass, and composites
- Titanium and non-magnetic alloys
Safety Guidelines
- Always wear protective gloves when handling magnets rated above 100 kg pull force — pinch injuries are the most common hazard
- Keep magnets away from dive computers, compasses, and electronic instruments — strong magnetic fields can cause permanent damage
- Never allow two magnets to snap together uncontrolled — the collision force can shatter the magnet and cause flying debris
- Use a safety lanyard to secure the magnet to your harness — prevents loss in current or during detachment
- Attach at a 45° angle and rotate flat — never approach a steel surface head-on with a strong magnet
- Brief your dive team on magnet location — unexpected strong pull near steel structures can trap equipment or limbs
Care & Maintenance
- Rinse thoroughly with fresh water after every saltwater use — salt crystals accelerate corrosion if left on the coating
- Dry completely before storage — moisture trapped against the magnet surface causes coating breakdown over time
- Inspect the Epoxy-HDPE coating regularly — any chips or cracks expose the neodymium core to corrosion
- Remove iron filings and metal particles after each use with a wire brush or cloth — accumulated debris reduces pull force
- Store in a cool, dry environment away from electronic equipment — temperatures above 80°C permanently reduce magnetic strength
- Apply a thin layer of corrosion inhibitor (light oil or silicone spray) for long-term storage
Built for demanding offshore operations
- Experienced commercial divers working on heavy offshore structures
- Operations requiring 250 kg pull force for heavy tools, welding equipment, or cutting gear
- Dive teams operating in strong currents where extra holding power is critical
- Pipeline contractors and subsea construction companies
- Recommended when safety margins demand higher pull force than the load requires
Frequently Asked Questions — Diver Magnet - 250
Related Products
Not sure this is the right model?
Compare all models side-by-side or read our FAQ.