Skip to Main Content

Ultra Tef-Gel

Long-lasting Corrosion Protection

Prevents galvanic corrosion, eliminates seizing, and protects against saltwater. Designed for aluminum, stainless, and other dissimilar metals.

Applying Ultra Tef Gel to boat as corrosion protection
  • Stops corrosion
  • Prevents galling and seizing
  • Waterproof barrier
  • UV resistant
  • Non-toxic & non-flammable

Learn More About Ultra Tef-Gel

Ultra Tef Gel Products
ULTRA Bilge Pump Switches™

ULTRA Bilge Pump Switches™

Engineered for Reliability

Built to perform when it matters most, ULTRA Bilge Pump Switches™ are handcrafted for lasting reliability and total moisture protection. Each switch is hermetically sealed, corrosion-resistant, and designed to last the lifetime of your boat.

Available in Mini, Junior, and Senior models with 12V or 24/32V options, every switch includes lead wires with adhesive butt splices, and commercial-grade durability, ensuring dependable operation for fishing boats, yachts, and everything in between.

Learn More About ULTRA Bilge Pump Switches

Featured Products

View All Products
Ultra Tef Gel - TG-01 (20cc tube)

Tef Gel - TG-01

(20cc tube)
$40.00 $34.00
Ultra Tef Gel - TG-02 (2oz tub)

Tef Gel - TG-02

(2oz tub)
$48.00 $41.00
Ultra Tef Gel - TG-04 (4oz tub)

Tef Gel - TG-04

(4oz tub)
$59.00 $51.00
Ultra Bilge Pumpswitch Senior - 12V

Ultra Bilge Pumpswitch Senior - 12Volt

$245.00 $240.00
Ultra Bilge Pumpswitches Junior - 12 Volt

Ultra Bilge Pumpswitches Junior - 12 Volt

$215.00 $210.00
Ultra Bilge Pumpswitches Mini - 12 Volt

Ultra Bilge Pumpswitches Mini - 12 Volt

$225.00 $220.00
Fishing Boats
Fishing Boats
Sailboats
Sailboats
Pontoon Boats
Pontoon Boats
Commercial Boats
Commercial Boats
Sea Plane
Sea Plane
Yacht
Yacht

From Fishing Boats to Yachts

Protect Every VesseL

Whether you’re navigating calm bays or offshore waters, reliability matters. Jupiter Boat Supply brings you ULTRA Tef-Gel and ULTRA Bilge Pump Switches, two trusted marine solutions engineered to keep your vessel running smoothly.

ULTRA Tef-Gel prevents corrosion, galling, and seizing wherever metals meet saltwater, extending the life of your hardware and fittings. Meanwhile, ULTRA Bilge Pump Switches provide automatic, maintenance-free protection against flooding with solid-state technology and no moving parts.

Together, they deliver long-lasting performance, peace of mind, and protection for every boat, from small fishing rigs to luxury yachts.

Trusted by Boaters Worldwide

See why boat owners, mechanics, and marine professionals rely on ULTRA Tef-Gel for lasting protection against corrosion, seizing, and saltwater wear.

I love this stuff!

I live on a boat, where corrosion is viral, especially on aluminum/stainless steel connections. Nothing I’ve coated with this has corroded, even after many years of salt water splashes. Makes maintenance into a relatively easy chore instead of a fight to the death with fasteners.

Stephen A. O’Brien
Very good product

Used it to attach Spinlock cam cleats with stainless steel screws to the aluminum plate below the deck combing. Expensive, you don’t need a lot.

A. Robert Gelb
Top of the line product for Marine/water/application applications

No need to get anything else anymore for all the metal parts used in marine applications especially screws, fishing reels (everything metal), fishing rod guides. Note: This is a thick gel it tends to hold up a little but I have not seen much a problem on bait cast reels gears and spinning reels. There is or was also a lighter Tef-Gel version but I have not found it around anymore. If you can get the lighter version then it may work better on application to moving parts as it is not so sticky. The gel is very sticky and will stick to hands, clothes, but will wash out with some hand soap from hands. The only part I’m stating as a loss is that it does not come with the useful and pictured application brush. I wouldn’t look for something else it’s a great product.

Mr Jan Kovar
There is nothing better

For a salty marine environment where corrosion is viral. I am working on sailing boats and every time I use Tef-Gel on aluminum/stainless steel connections, I realize that I am doing that for the person who has to take it apart. Instead of cursing, drilling and tapping you just take the bolts out again. On my own boat maintenance became a lot easier and I hope the next time I have to take something apart, that the one who mounted it, used Tef-Gel.

Rudy Schellingerhout
Perfect for Fishing Reel Drag Washers

I have the 20cc syringe which I purchased last year (that size doesn’t seem to be available right now). I’ve been looking for a suitable grease to use on my fishing reel drag washers. This lubricant is perfect to use on any carbon fiber drag washer. Just a light coating on each side of the washer does a great job if applied properly. It’s much thicker and stickier then any of the other lubes that I’ve tried for this application (“Cal’s, “Penn Blue Grease” or “Shimano Grease”)….very similar to the stuff that came with the old Newell reels. A little goes a long way.

TheReader
Great for squeaky bushing too

I use this to lube the polyurethane suspension bushings on my truck. Completely keeps everything from squeaking. Great product to have in every garage.

Patrick G
Must have for aluminum boats

100% satisfied; delivered and performed as advertised. For an aluminum boat, always have Tef-gel handy.

Amazon Customer
Indispensable for a marine mechanic

If you’re joining different metals, like aluminum with Stainless steel bolts, this stuff is indispensable. Expensive for the quantity, but a little goes a long way. Nice applicator

Paul Manning
Excellent product!

I have been using it for about 10 years in the marine environment it is amazing. I have not found anything else like it on the market. This is a must-have item for saltwater use.

jpflyrod
Really Works!

I have been using this product for years on my ocean aluminum catamaran to prevent corrosion between the aluminum boat and stainless screws due to dissimilar metals. Screws come right out when needed!!

BBugg
Great way to prevent electrolysis galling of dissimilar metals

This stuff really works. Put it on every bolt that needs to come off at a later date. Prevents electrolysis galling.

Uncle Devo

Frequently Asked Questions

Find quick answers to the most common questions about ULTRA Tef-Gel: its uses, compatibility, application methods, and long-term performance in marine environments. For additional inquiries or specific concerns, contact us and our team will be happy to assist you.

Contact Us

ULTRA Tef-Gel is a PTFE-based anti-seize and anti-corrosion lubricant designed to prevent metal corrosion, galling, and seizing in saltwater environments. It’s ideal for protecting bolts, fittings, and hardware on all types of boats and marine equipment.

Tef-Gel™ should be applied to any metal surfaces where corrosion, galling, or seizing could occur, especially between dissimilar metals. Common marine applications include:

  • Stainless steel fasteners on deck hardware, rigging, and fittings
  • Aluminum fittings and metal-to-metal joints
  • Sailboat rigging and turnbuckles
  • Through-hull fittings and other hardware exposed to saltwater
  • Bolts, screws, and threaded connections that may be difficult to remove later

Apply a thin, even layer to the contact surfaces before assembly. Tef-Gel™ will form a long-lasting protective barrier, preventing corrosion while keeping hardware moving freely.

ULTRA Tef-Gel™ is safe for most metals commonly used in marine, aviation, and industrial applications, including stainless steel, aluminum, and other metals that are prone to galvanic corrosion. It is non-toxic, non-hardening, and won’t damage surfaces when applied as directed.

Ultra Tef-Gel™ provides long-lasting protection for metal hardware in marine, aviation, and industrial applications. When applied correctly, it can prevent corrosion and seizing for years, even in harsh saltwater environments. Its non-hardening formula ensures that components remain movable and protected over the life of the equipment.

Yes! While ULTRA Tef-Gel™ is designed for marine use, it is also ideal for aviation, industrial, and any other applications where metal hardware is exposed to corrosion, galling, or seizing. Its non-toxic, non-hardening formula protects stainless steel, aluminum, and other metals in harsh environments beyond the water.

The ULTRA Bilge Pumpswitch automatically activates your bilge pump when the water level rises and turns it off once the bilge is pumped dry. It uses a reliable mechanical float to sense rising water and protect your boat from flooding or pump burnout.

The ULTRA Pumpswitch stands out due to its rugged, marine-grade construction and durable design. Unlike many traditional float switches, it’s built with:

  • A durable, sealed float mechanism
  • No mercury or hazardous materials
  • All stainless-steel and non-corrosive components
  • Waterproof construction designed for long-term reliability
  • Resistance to oil, fuel, debris, and harsh bilge environments
  • Positive-action switching with no electronic timer delays
  • The result is a switch that is highly reliable, safe, and built to outlast standard bilge pump switches.

Yes. ULTRA Pumpswitches are compatible with any 12V or 24/32V DC bilge pump, as long as the pump is within the switch’s amp rating. They work with nearly all major marine pump brands and come with wiring instructions printed directly on the switch for easy installation.

Installation is simple and similar to most mechanical float switches:

  1. Wire the switch in-line with your bilge pump following the diagram on the switch body.
  2. Test the switch to confirm proper float movement and pump activation.
  3. Mount the switch vertically in the bilge using the included stainless hardware.
  4. Ensure the float has free movement and sits at the desired activation height.
  5. No calibration or electronic settings are required, just mount, wire, and test.

Yes. ULTRA Pumpswitches are engineered specifically for harsh marine environments, including saltwater. Features that support marine durability include:

  • Non-magnetic stainless-steel parts
  • Heavy-duty, impact-resistant casing
  • Fully sealed and water-resistant construction
  • Materials that resist corrosion, oil, fuel, and debris
  • They are designed to perform reliably in both saltwater and freshwater bilges.

Yes. Every ULTRA Bilge Pumpswitch comes with a warranty, reflecting its durability and proven long-term performance.

Latest from Our Blog

Corrosion prevention, bilge pump advice, and boat maintenance tips from the Jupiter Boat Supply team.

View All Articles
To Top