Loctite 518 Gasket Sealant in Nairobi | Wisdo Merchants

Description

Loctite 518 Gasket Sealant for Rigid Metal Flanges

Cut gaskets tear, shrink and leak, and finding the right one for an old gearbox or pump can take days. Loctite 518 gasket sealant replaces them with a liquid seal that fits any flange shape. At Wisdo Merchants, we supply it to maintenance technicians, mechanics and plant engineers across Nairobi and Kenya.

Loctite 518 is a red, semi-flexible flange sealant made by Henkel. It is an anaerobic adhesive, which means it stays soft in the tube but cures once it is squeezed between metal surfaces without air. As a result, it forms a tough, chemical-resistant gasket exactly where you need it, while still letting you dismantle the parts later.

Features and Benefits of Loctite 518 Gasket Sealant

• Replaces cut gaskets. One tube seals flanges of any shape or size, so you no longer need to stock many pre-cut gaskets.
• Seals instantly at low pressure. The joint holds low pressure as soon as you assemble it, even before full cure.
• Fills gaps up to 0.25 mm. It adapts to scratches and small surface irregularities on the flange.
• Works on aluminium and stainless. It cures on inactive metals without a primer.
• Easy dismantling. Parts come apart readily, even after long service.

For workshops, this means fewer leaks, faster repairs and less gasket stock. Meanwhile, equipment stays sealed for longer between overhauls.

Technical Specifications

Applications of Loctite 518 Gasket Sealant and How to Use It

• Gearbox and transmission housings
• Pump casings and covers
• Motor end covers and housings
• Compressor crankcase covers and rigid flanged joints
• Engine parts with rigid machined flanges, such as covers and housings

Sealing a Gearbox Cover

Picture a technician refitting a gearbox cover after replacing a bearing. First, they scrape off the old gasket and degrease both flanges. Next, they run a continuous bead of Loctite 518 around one flange, circling each bolt hole. After that, they fit the cover and tighten the bolts evenly to their normal torque. Finally, they allow the sealant to cure before filling the gearbox with oil. For small screws elsewhere on the job, use our purple low-strength threadlocker.

Getting the Best Seal

Loctite 518 works best on rigid, machined metal flanges that sit close together. Therefore, it is not suitable for flexible pressed-steel covers or large gaps. On cold days or on passive metals, curing slows down, so allow extra time before loading the joint.

Safety and Handling

• Avoid skin and eye contact. Wear gloves and safety glasses, and wash off any spills promptly.
• Read the Safety Data Sheet. Follow Henkel’s handling and first-aid guidance.
• Use on metal parts. Anaerobic sealants are designed for metal flanges and may harm some plastics.
• Do not use on pure oxygen systems. Avoid oxygen-rich or chlorine systems unless the manufacturer approves it.
• Store properly. Keep the container closed, in a cool, dry place away from sunlight.

Frequently Asked Questions

Can Loctite 518 replace a paper or rubber gasket?

Yes, on rigid metal flanges with a small gap. It is not designed for flexible covers or wide gaps.

How long before I can fill the gearbox with oil?

It fixtures in about 25 minutes on steel. However, allow longer, ideally several hours, before pressurising or filling the housing.

Can I take the parts apart later?

Yes. Loctite 518 is medium strength, so flanges come apart easily with normal tools.

Does it work on aluminium?

Yes. It cures on aluminium, stainless steel and other inactive metals without a primer.

Do you deliver outside Nairobi?

We offer same-day delivery once your order is confirmed, subject to stock availability. Call or email our sales team to confirm stock and arrange delivery to your site.

Order Loctite 518 from Wisdo Merchants

Leak-free flanges start with the right sealant. Our Loctite 518 gasket sealant gives your gearboxes, pumps and housings a reliable seal without the hassle of cut gaskets. Furthermore, you can browse our full product range for your other maintenance needs.

Visit us: Dar es Salaam Road, Off Enterprise Road, Industrial Area, Nairobi
Call: +254 795 938305
Email: sales@wisdomerchants.com