303 Marine Fabric Guard 30674 is a protective treatment for suitable fabrics that need renewed water repellency. Mariners Warehouse SKU 77123 supplies one 1 gallon container. This single gallon provides additional supply; select suitable separate dispensing equipment as required.

Manufacturer positioning covers appropriate natural and synthetic marine fabrics and protection against water-based stains while retaining fabric feel and breathability under correct use. It is a protective step after cleaning, rather than a stain remover, seam repair or approval for every coated textile. Verify the exact fabric maker’s rules, pretest colorfastness and protect adjacent non-fabric materials from overspray.

Use only on thoroughly cleaned, fully dry approved fabric in a well-ventilated area, with fabric temperature above 70°F (21°C) under the current guidance. Spray overlapping passes for even coverage using the delivered label’s amount; do not use a roller or brush as a substitute. Keep away from ignition sources and protect the treated item from rain or dew until fully cured. Follow the delivered bottle’s complete drying/cure time before use, water exposure or storage, allowing for actual temperature and humidity.

Clear Product Details

Review the 16 oz gel format, specifications and application directions.

Surface Guidance

Check fiberglass, gelcoat and finish suitability before use.

Product Support

Ask about your surface and stain type before ordering.

Shipping & Returns

Review shipping information and return conditions before purchase.

Application Guides

Plan Your 303 Marine Fabric Guard Use

Confirm the exact item, task, surface and included quantity before starting.

Fabric Guard or Aerospace Protectant?

Marine Fabric Guard restores water repellency on suitable clean, dry fabric. Aerospace Protectant supplies matte UV care for its own approved materials and excludes fabrics/canvas. Identify the actual textile or non-fabric surface before choosing either treatment.

The 16 oz, 32 oz and single-gallon Fabric Guard listings change available supply, not the permitted method or strength of one treatment. Compare expected use and storage, then select any required separate spray equipment. Neither product repairs torn fabric or eliminates the need for material-approved cleaning and full drying. Review the 303 Marine Fabric Guard - 16oz MPN - 30616 as a separately sold option.

Continue Your Care-Product Selection

Choose a product family by your actual task and verify every selected item separately.

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Frequently Asked Questions

What does SKU 77123 include?
One 1 gallon container. The manufacturer/pack code is 30674.
Is Fabric Guard a cleaner?
It is a protective treatment. Clean and fully dry the approved fabric before applying it.
Which fabrics are identified?
Suitable natural and synthetic fabrics, with the exact textile and any coating approved by the material maker and product label.
Should I test colorfastness?
Yes. Pretest an inconspicuous area and follow the fabric/product requirements before treating visible material.
Can I apply it with a roller or brush?
Current Marine Fabric Guard guidance advises against roller or brush application; use the exact spray method.
How long must it cure?
Follow the delivered container’s full drying/cure requirement for actual temperature and humidity. Keep protected from rain or dew until cured before use or storage.
Does a larger container change coverage per coat?
More supply does not increase formula strength or prove a fixed area allowance. Material, preparation and application affect consumption.
How can I confirm the right selection?
Contact Mariners Warehouse with SKU 77123, code 30674, your actual material or equipment and the intended task.

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