Lo-Chlor Leak Sealer 1L – Pool and Spa Chemical
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Seal Minor Leaks Without Draining Your Pool
Lo-Chlor Leak Sealer is an advanced liquid formulation used to help seal minor cracks and leaks in swimming pool and spa surfaces and pipework.
It is ideal when you want to address small water-loss issues without emptying the pool or spa, supporting a faster return to normal operation with minimal disruption.
Fast acting and easy to apply, it helps minimise downtime and supports a quicker return to normal operation.

Features & Benefits
- Helps seal minor leaks – supports sealing of small cracks and leaks in many pools and spas.
- Surface and pipework support – suitable for leaks in pool surfaces and circulation lines.
- No draining required – helps address minor leaks without emptying the pool or spa.
- Fast acting – results are often seen within 24 hours, depending on conditions.
- Supports measurable water loss – suitable where loss is up to 3.5cm per day (50,000L pool).
How It Works
Leak Sealer starts as a liquid and disperses through the water to help reach the leak area. As it adjusts from its original high pH to normal pool water conditions, it begins to solidify in the presence of oxygen at the leak site.
This process helps create a sealing effect in minor cracks and small leak points, supporting improved water retention without structural changes.
How to Use
- Confirm the leak is minor and within the product’s recommended water loss range.
- Remove any automatic pool cleaner from the pool.
- Ensure the product does not pass through the filtration system (use a recirculate/bypass setting if available, or temporarily remove filter media where appropriate).
- Apply Leak Sealer as directed on the label, based on where the leak is most likely occurring (surface area or pipework).
- Allow circulation as instructed on the bottle label and check the water level after 24 hours.
Dosage & Coverage
- Dosage: 1 litre treats 50,000 litres of pool water.
Important Usage & Compatibility Information
- Intended for sealing minor leaks only.
- Not suitable for vinyl liner pools.
- Larger defects or ongoing water loss require professional plumbing or structural repair.
- Ensure the product does not pass through filtration media during treatment.
- Follow label directions and do not exceed the recommended dosage.
This product assists with minor leak sealing and does not replace structural repairs where required.
Why Choose Lo-Chlor Maintenance & Cleaning Products?
Lo-Chlor’s Maintenance & Cleaning range is developed to support practical, professional-grade solutions for pool owners and technicians.
From equipment support to surface care, each product is selected to simplify maintenance and keep pool systems running smoothly with reliable, proven performance.

Frequently Asked Questions
What types of leaks can this help seal?
Do I need to drain the pool or spa first?
How quickly can results be seen?
Is it suitable for vinyl liner pools?
Why must it not pass through the filtration system?
| SKU | 60LS1L |
|---|---|
| GTIN | 9312113000237 |
| Barcode | 60LS1L |
| Warranty | 10 Years |
| Brand | Lo-Chlor |
| Model | Leak Sealer - 1L |
| Product Type | Pool & Spa Chemical |
| Shipping Type | Standard |
| Chemical Type | Other Chemicals |
| Chemical Function | Leak Sealer |
| Active Constituents | Alkaline salts: <50% Water: to 100% |
Shipping
Same-day dispatch applies to orders received by 12.00 pm (AEST) during business days. Orders received after 12.00 pm and on weekends or public holidays will be dispatched on the next business day.
Delivery fees are $19.95 flat-rate per order Australia-wide, no matter how many products are in it. Orders containing bulky items like sand filters, acoustic boxes, heat pumps, pool covers, and pool slides may incur additional fees as they require specialized carriers.
Below are the estimated time to arrival in business days once an order is shipped.
| Destination | Sydney | NSW | VIC | QLD | SA | WA/NT |
|---|---|---|---|---|---|---|
| Business Days | 1 - 2 | 2 - 4 | 2 - 4 | 2 - 4 | 3 - 4 | 5 - 6 |
Rural and remote addresses, where delivery is not provided every day, may take longer.
Returns
Satisfaction Guarantee: If you are not satisfied with a product for any reason, you are welcome to return it to us for a full refund or exchange within 30 days of the purchase date - even if you have used the product. Returns are free, and we will cover return shipping.
We take full responsibility for the safe arrival of the products that you order from us. We will replace at our expense any product that arrives faulty, damaged during transit, or is the incorrect product. Click here for details
If you have any questions about our shipping policy or our return policy, please contact us on 1300 766 619 or through our contact us form.