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3oz Silicone Sealant RTV 100%
Simplified Pools
Professional Choice

3oz Silicone Sealant RTV 100%

$10.99
In Stock Locally
Delivery in the DFW metroplex
Delivery to Your ZIP
Free Local PickupReady in 2hrs at Northlake, TX
DFW DeliveryFast shipping via local courier

Product Overview

Pool techs across DFW stock the 315 Silicone because it provides a reliable, waterproof seal for equipment repairs and light niches.

This 3oz tube of 315 100% RTV Silicone Sealant is a professional-grade acetoxy adhesive that cures into a durable rubber solid upon exposure to air moisture. Simplified Pools carries this specific Boss Products formula because it remains flexible and VOC compliant, making it the standard specification for sealing pool light niches and small plumbing gaps. Unlike generic hardware store sealants, this 100% Silicone formula is designed to withstand the constant moisture and chemical exposure found in a pool environment.

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Why Pool Pros Trust This

Benefits & What Makes It Different

100% RTV Silicone

This one-component acetoxy formula provides a high-strength bond that won't shrink or crack over time, ensuring a long-lasting seal.

3oz Precision Tube

The compact size is ideal for detailed work like sealing pool light cords or small equipment leaks without the waste of a full-sized caulking gun tube.

VOC Compliant Formula

Meets strict environmental standards while maintaining the chemical resistance necessary for submerged or splash-zone applications.

Compatibility

  • Compatible with most plastics, metals, and masonry surfaces
  • Safe for use in chlorinated and saltwater pool environments
  • Not recommended for structural repairs on pressurized plumbing lines

When To Use This

Sealing pool light niches and cord exitsGasket reinforcement on pump or filter housingsSmall crack repairs in non-pressurized plastic components

Pro Tip

Before applying the 315 Silicone, ensure the surface is completely dry and cleaned with rubbing alcohol; even 100% silicone struggles to bond to the biofilm or calcium deposits often found in older pools.

Common Questions & Instructions

How long does the 315 100% RTV Silicone take to cure before I can refill the pool?

While it becomes tack-free quickly, we recommend waiting at least 24 hours for a full cure before exposing the 315 Silicone to high-pressure water or full submersion.

Can I use this silicone sealant to fix a leak in my pool's PVC plumbing?

This 100% Silicone is excellent for sealing gaps and threads, but for pressurized PVC pipe cracks, a dedicated solvent weld or epoxy is usually the standard specification.

Is this sealant safe for use around pool lights and electrical niches?

Yes, the 315 formula is a proven choice for sealing the cord exit in light niches to prevent water from traveling through the conduit.

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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1611 Commons Cir Suite 100
Northlake, TX 76226

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