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American Granby
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1/2" x 520" PTFE Thread Seal Tape White
American Granby
Professional Choice

1/2" x 520" PTFE Thread Seal Tape White

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Product Overview

A proven choice for creating leak-proof seals on threaded pool plumbing and equipment.

Pool techs reach for the American Granby HTT520 when installing pressure gauges or threaded PVC fittings because it provides a reliable, non-hardening seal. This 1/2" x 520" PTFE tape is UL Listed 31RO, ensuring it meets specific standards for pipe joint compounds in pressurized systems. Unlike generic tapes that can be overly thin, this specification handles the constant vibration and chemical exposure common in pool equipment pads.

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Why Pool Pros Trust This

Benefits & What Makes It Different

UL Listed 31RO Standard

This certification ensures the tape is rated as a pipe joint compound, providing peace of mind for high-pressure pool plumbing applications.

High-Density PTFE

The 100% PTFE material is chemically inert, meaning it won't degrade when exposed to high chlorine levels or acidic pool water conditions.

Extended 520-Inch Roll

The HTT520 provides enough length for dozens of equipment installs, making it a staple for service trucks and well-stocked pump rooms.

Compatibility

  • Schedule 40 and 80 PVC fittings
  • Stainless steel pressure gauge stems
  • Brass and copper threaded pipe

When To Use This

Installing a new pressure gauge on a filter tankConnecting threaded PVC adapters to a pump housingSealing threaded chlorinator or salt cell unions

Pro Tip

If you are sealing a plastic-to-plastic threaded connection, avoid over-tightening; the PTFE tape provides the seal, so hand-tight plus a quarter turn is usually sufficient to prevent cracking the manifold.

Common Questions & Instructions

How many times should I wrap PTFE tape around pool plumbing threads?

For standard 1/2 inch or 3/4 inch threaded fittings, we recommend 3 to 5 wraps to ensure a watertight seal without over-stressing the plastic housing or manifold.

Which direction do you apply the HTT520 thread seal tape?

Always wrap the tape in a clockwise direction (following the threads) so that it stays tight and flat as you screw the fitting into the female port rather than unravelling.

Can this tape be used on pool heater gas lines or just water lines?

While PTFE is versatile, the HTT520 is specifically UL Listed as a pipe joint compound for water systems; always check local codes for gas-specific yellow tape requirements for heaters.

Same-Day DFW Delivery

Delivered today to your DFW neighborhood

Order this item by 2 PM Central on a weekday, and we'll have it on your driveway by evening. Same-day delivery is FREE to every ZIP in our DFW coverage area — no minimum — or it's free with our weekly service plan.

Free checklist

The DFW month-by-month pool checklist

What it covers (12 months · 76 tasks · 12 marked critical):

  • Freeze nights (January and December): keep the pump running, and what to drain if the power goes out
  • The March opening: test everything, brush, shock, then balance alkalinity, pH and calcium
  • Summer: testing two or three times a week, the weekly shock, and what to do after rain or a party
  • Fall leaves, and easing the chemistry down for winter
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One email with a link to the printable checklist — print it, or save it as a PDF, from that page. That is all we send: no mailing list.

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Northlake, TX 76226

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