two tubes of flexible sealer with white and blue packaging alongside two matching blue boxes and a blue card with a drop of sealer
Anderson

Anderson Blue Flexible Sealer for Vinyl, 4 oz | ANDFS4B

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$18.99
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SKU:
ANDFS4B

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About This Item

The professional nitrile rubber sealant designed to seal vinyl liner leaks instantly, even while underwater.

Product Overview

Anderson Manufacturing Flexible Sealer is a high-performance, nitrile rubber-based adhesive formulated to perform permanent repairs on swimming pool liners and components. Unlike standard silicones that may struggle with adhesion in submerged conditions, this solvent-based formula creates a powerful chemical bond to vinyl, PVC, fiberglass, and plaster, whether applied wet or dry. Its distinct blue color is engineered to blend seamlessly with blue vinyl patterns, making it the ideal solution for sealing pinholes, bedding faceplates, and stopping suction-side plumbing leaks without draining the pool.

Key Features

  • Underwater Application: Formulated to apply and cure directly underwater, allowing for immediate repairs to vinyl liners without the need for draining.

  • Nitrile Rubber Chemistry: Provides superior adhesion and long-term flexibility, preventing the seal from cracking or peeling due to temperature expansion or liner movement.

  • Rapid Skin-Over: Surfaces skin over in seconds, allowing the user to flatten the bead with a wet finger for a smooth, professional finish immediately after application.

  • Versatile Adhesion: Bonds aggressively to vinyl (with or without a patch), PVC, fiberglass, gunite, and ceramics, making it a universal repair tool for the entire pool environment.

How to Use

  1. Prep: Clean the area to be repaired thoroughly, removing any algae, oils, or loose debris to ensure a solid bond.

  2. Apply: Squeeze a bead of sealant directly from the tube onto the puncture or crack (for small holes, no patch is required).

  3. Finish: Allow the sealant to skin over (a few seconds), then flatten and smooth the bead using a wet finger to ensure it lies flush with the surface.

  4. Cure: The seal remains flexible immediately; allow 24 hours for a full chemical cure depending on thickness.

Product Specifications

Specification Detail
Model ANDFS4B (FS4B)
Brand Anderson Manufacturing (Leakmaster)
Color Blue
Size 4 oz Tube
Chemistry Nitrile Rubber (Solvent-Based)
Service Temp N/A (Flash Point: 24°F)
VOC N/A
Format: you@example.com

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Frequently Asked Questions

Can this really be applied underwater without draining the pool? +

Yes. When used as instructed, this sealer is formulated to be applied and cure underwater, so you can seal leaks without draining the pool.

Will the blue color match my vinyl liner pattern? +

Possibly. The sealant is tinted blue to blend with common blue vinyl liner patterns, but it is not designed to match every shade or pattern exactly. Apply a small amount in a less visible spot first if appearance matters.

How long does it take to fully cure? +

A full cure takes about 24 hours, depending on how thickly it is applied.

Does it work on a small pinhole without using a patch? +

Yes. For a small pinhole, clean the spot thoroughly, and apply a bead of sealer directly over the hole without a patch, then smooth it flat with a wet finger.

Can I use it on PVC pipe leaks on the suction side? +

Yes. It bonds to PVC and is made for small suction-side plumbing leaks, but cracked or moving pipe should be repaired or replaced rather than just sealed.

Can I use it on PVC pipe leaks on the pressure (return) side? +

No, the water pressure pushes the seal out of the leak. For a pressure side PVC leak, use proper PVC fittings, primer, and cement, or replace the leaking section.

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