O-87 | Aladdin Universal 18" Filter Tank O-Ring

The Aladdin O-87 Universal 18-inch Filter Tank O-Ring is engineered to restore a dependable, watertight seal on a wide range of 18" single- and two-piece filter tanks. Molded from durable, chemical-resistant elastomer, it maintains flexibility under pressure, preventing leaks around the tank’s mid-clamp or lid band. Its universal fit design matches the dimensions used on many sand and cartridge filters, allowing the O-ring to seat cleanly in the tank groove for consistent sealing, stable operating pressure, and reliable filtration performance.

Highlights

• Universal 18" Fit: Sized to match common 18-inch filter tank sealing grooves across multiple sand and cartridge filter models.

• Leak-Tight Performance: Forms a reliable barrier that prevents water seepage and pressure loss at the tank clamp or lid joint.

• Chemical-Resistant Material: Constructed from long-lasting elastomer that withstands chlorine, heat, and outdoor exposure.

• Secure, Even Seating: Precision-molded to sit smoothly in the tank channel for consistent sealing during routine maintenance.

• Supports Filter Efficiency: Helps maintain stable internal pressure for optimum sand or cartridge filtration performance.

Additional Info

The Aladdin O-87 Universal 18-inch Filter Tank O-Ring provides a replacement sealing surface for many 18" sand and cartridge filters. This FAQ helps walk-in customers at Discount Pool Mart verify compatibility, understand installation steps, and troubleshoot pressure-loss issues before picking up the O-87 in store. These details support a stable, watertight seal around the tank clamp or lid band.

Compatibility and Fitment

Customers often visit Discount Pool Mart unsure which tank O-ring their filter requires. This section clarifies how to confirm the O-87 match.

How do I know if the O-87 fits my 18-inch filter tank?

Check your filter’s label for an 18" tank diameter or bring a photo of your filter clamp area. The O-87 is designed for common 18-inch tank grooves used in both sand and cartridge filters. Staff can verify compatibility when you visit.

Does the O-87 work on both single-piece and split-tank filter designs?

Yes, the O-87 fits sealing grooves found on many one-piece lid systems and mid-band clamp assemblies. Its universal sizing helps it seat correctly across a wide range of models.

Can a worn tank O-ring cause low pressure or water seepage?

Yes, cracked or flattened tank O-rings can allow leaks around the clamp area, reducing internal pressure and lowering filtration efficiency. Replacing it with the O-87 usually resolves these issues.

Installation and Troubleshooting

Walk-in customers commonly ask how to seat the O-ring and how to identify sealing problems.

How do I install the O-87 correctly on my filter tank?

Remove the clamp, clean the groove thoroughly, lubricate lightly, and position the O-ring evenly. Make sure it sits flat before re-securing the clamp. Even tightening helps maintain a uniform seal.

What signs indicate the old tank O-ring has failed?

Moisture around the clamp, hissing noise under pressure, or unstable filter PSI often indicate a compromised seal. Replacing the O-ring typically restores normal operation.

How can I confirm the new O-ring is sealing properly?

The filter should hold steady pressure without drips or spray at the band area. A quiet, consistent pressure reading indicates correct sealing.

In-Store Pickup and Local Guidance

Discount Pool Mart customers often complete multiple filter-maintenance tasks at once. This section prepares you for a smooth visit.

Is the O-87 normally stocked at Discount Pool Mart?

Yes, due to the prevalence of 18" filters in residential systems. Calling ahead ensures it's ready for pickup.

Should I bring my old O-ring or filter photos to the store?

Yes, images of the tank clamp or the old gasket help staff verify whether the O-87 is correct for your model.

Do customers often buy other maintenance parts with the O-87?

Yes, many walk-in customers purchase filter sand, cartridges, or clamp hardware during the same visit for a full service session.