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303 Rubber Seal Protectant

Water-based conditioner for rubber door seals

303 Rubber Seal Protectant

SKU 303-30324 Ask a question

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£11.99

Out of stock

Size 101ml

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303 Rubber Seal Protectant 303 Rubber Seal Protectant £11.99
Click & Collect: Ilkeston · FreeMost eligible orders are ready within 5 minutes during opening times. Please wait for your collection-ready confirmation before travelling. Click & Collect: Ilkeston Not available for this option. Options that can be collected show it here. How it works
  • Conditions door, window, bonnet and boot seals
  • Protects against drying and cracking
  • Restores elasticity to ageing seals
  • Rejuvenates colour on old seals
  • Attached foam applicator for tight spots
  • 100% water-based and not a dye
  • Dries to the touch without attracting dust
  • Compact 101ml bottle
Read the full description

Full Description

  • 303 Rubber Seal Protectant provides protection against drying and cracking in extreme temperatures for weather seals.
  • Restores seal elasticity and conditions weather seals for doors, windows, hoods and trunks.
  • Perfect for use on cars, boats, RV's or any rubber weather seal that needs conditioning and it will also rejuvenate color to old seals.
  • Includes an easy-to-apply applicator to get into the tough spots around doors, windows, hoods and trunk seals. Also great for use on windshield wipers.
  • Made in the U. S. A.

More in Trim Dressings.

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Key features

  • Rubber Seals
  • Foam Applicator
  • Water-Based
  • 101ml Bottle
  • Made In USA

The Drivers HQ

Expert Notes

303 Rubber Seal Protectant is a 101ml water-based conditioner for the rubber weather seals on doors, windows, sunroofs, bonnets and boots. It protects against drying and cracking in extreme temperatures, restores elasticity and rejuvenates the colour of old seals. It is not a dye: the formula dries to the touch and will not attract dust or dirt, and the attached foam applicator makes it easy to work into corners. It suits older cars with tired seals, cars that stand for long periods, boats and motorhomes. Apply it to clean, dry seals, repeat on badly weathered rubber and reapply every 3 to 5 weeks, as 303 recommends. Keep the bottle away from frost. Made in the USA.

Perfect For / Suitable Surfaces

  • Door seals
  • Window seals
  • Sunroof seals
  • Bonnet seals
  • Boot seals
  • Boat rubber seals
  • Motorhome door and window seals
  • Windscreen wiper rubbers

Caution: Do not allow the product to freeze. Apply only to clean, dry rubber and let it dry fully before closing doors or windows.

Technical Specifications

Product Type
Rubber Seal Protectant
Brand
303
Suitable For
Door, Window, Sunroof, Bonnet And Boot Seals
Size
101ml (3.4oz)
Formula
100% Water-Based Conditioner, Not A Dye
Applicator
Attached Foam Applicator
Finish
Dries To The Touch, Does Not Attract Dust Or Dirt
Storage
Do Not Allow To Freeze
Country Of Origin
USA
Vehicles
Cars, Boats And Motorhomes
Reapplication
Every 3 To 5 Weeks

How To Use

Application

  1. Shake the bottle well before use.
  2. Clean the seals and make sure they are completely dry.
  3. Apply an even coat with the attached foam applicator, working along each seal.
  4. Use the applicator edge to reach corners around doors, windows, bonnet and boot.
  5. Leave the product to dry fully before closing doors, windows or the sunroof.
  6. Repeat on older or severely weathered seals as needed.

Aftercare

  1. Reapply every 3 to 5 weeks, as 303 recommends.
  2. Inspect the seals regularly for signs of drying or cracking.
  3. Wipe the seals clean during regular washes so grit does not build up.
  4. Store the bottle indoors where it cannot freeze, rather than in a cold garage or boot.
  5. Close the bottle securely after each use.

Top Tip: Treat door seals before winter so they are conditioned before frost and ice arrive.

Performance Benefits

  • Helps seals resist drying and cracking
  • Brings back flexibility to tired rubber
  • Revives the colour of faded seals
  • Protects seals in extreme temperatures
  • Dries fully to the touch
  • Reaches tight spots easily

Frequently Asked Questions

What does it do?

303 Rubber Seal Protectant conditions rubber weather seals on doors, windows, bonnets and boots. It protects against drying and cracking in extreme temperatures and restores elasticity.

Is it a dye?

No, 303 Rubber Seal Protectant is not a dye. It is a 100% water-based conditioner that restores the look of dull, faded seals.

How do I apply it?

Shake well, make sure the seal is clean and dry, then apply evenly with the attached foam applicator and let it dry fully.

How often should I reapply it?

303 recommends reapplying every 3 to 5 weeks, and repeating as needed on older or severely weathered seals.

Will it attract dirt?

No, the formula dries to the touch and will not attract dust or dirt.

What size is it?

It comes in a 101ml (3.4oz) bottle with an attached foam applicator.

Can I use it on boats and motorhomes?

Yes, it is made for cars, boats, motorhomes and any rubber weather seal that needs conditioning.

Where can I buy it in the UK?

Order 303 Rubber Seal Protectant from The Drivers HQ with UK-wide delivery, or buy it at our walk-in store in Ilkeston, Derbyshire.

HQ Suggests Tips & Insights

  1. Clean and dry each seal before applying.
  2. Test on a small hidden area of the seal first.
  3. Let it dry fully before shutting doors or windows.
  4. Reapply every 3 to 5 weeks to keep seals conditioned.
  5. Give old, weathered seals a second application.
  6. Keep the bottle somewhere it cannot freeze.
  7. Treat sunroof, bonnet and boot seals as well as doors.
  8. Wipe any excess off glass and paint with a microfibre cloth.

The Brand

303

303 is an American surface protection brand that has been a trusted name in its field since 1980. Its protectant was first developed to protect aircraft rubber wing boots at high altitude, and the formulas now care for cars, boats, RVs and outdoor gear. Since 2012, 303 has belonged to Gold Eagle Co., the Chicago company behind STA-BIL, which says its branded products, 303 included, are manufactured in the United States at its facilities in Chicago. The brand line is Proven to Protect.

At The Drivers HQ we stock 303 online with UK delivery and in our Ilkeston shop. Popular choices include 303 Aerospace Protectant, the Automotive Speed Detailer and the Slick Shine Ceramic Detailer.

Shop all 303
303 Speed Detailer, Protectant Wipes, Aerospace Protectant and Wheel & Tire Cleaner on a black display plinth

303 protectants, trim and leather care

Aerospace Protectant. The product 303 is known for, in 296ml, 473ml and 946ml. 303 describes it as a water-based formula with no petroleum distillates, alcohol, mineral oil or harmful silicone oils, which dries to a clear matte finish, blocks UV to help stop fading and cracking, and repels dust and stains. It suits vinyl, plastic, rubber, finished leather and fibreglass, but not clear plastics, suede, fabrics, flooring, gauge panels or headlights. Spray it onto a clean, dry surface out of direct sun and wipe it completely dry, because it does not air dry; 303 says to reapply every 30 to 45 days. The same protection comes as Automotive Protectant 473ml and in a tub of 25 Protectant Wipes.

Trim, seals and tyres. Rubber Seal Protectant comes in a 101ml bottle with an applicator for door, window, bonnet and boot seals, and helps them keep their elasticity. Graphene Trim Coating is a non-greasy coating for faded trim that 303 rates at up to 6 months, and Tyre Coating & Protectant is a water-based, sling-free aerosol that dries to a satin shine with no brush needed.

Leather. A two-step system: Leather Cleaner lifts stains and preps the surface, then Leather Conditioner softens the leather and adds UV protection that 303 rates at 30 days. Both suit finished and unfinished leather.

Fabric and stains. Multi-Surface Cleaner removes spots of coffee, oil, grease and ink from water-safe surfaces, and Mold & Mildew Cleaner + Blocker removes mould stains without bleach. Fabric Guard restores water and stain repellency to outdoor fabrics, such as a convertible roof's seams, and is not for interior fabrics.

Shop more plastic and vinyl protectants, trim dressings and leather cleaners.

303 Speed Detailer being sprayed onto the bonnet of a blue car on a driveway

303 detailers, coatings and wheel cleaners

Between washes. The Automotive Speed Detailer is mist-on, wipe-off gloss for paint, plastics, fibreglass, chrome and glass, with anti-static properties and UV blockers. The Slick Shine Ceramic Detailer is infused with SiO2 and carnauba wax, works on wet paint as a drying aid or on dry paint, and is safe on matte paint. The Graphene Detailer tops up existing coatings, works wet or dry and lasts up to 90 days, and the Automotive Spray Wax cleans off water spots and dust and leaves protection rated at up to 90 days.

Coating. Graphene Nano Spray Coating is a graphene oxide based spray coating that 303 rates at 12 months. It is strongly hydrophobic, helps reduce water spots by lowering the surface temperature, can be applied in direct sunlight and also goes on glass, wheels and trim.

Wheels. Wheel & Tire Cleaner is a foaming, acid-free and non-corrosive cleaner for wheels and tyres: spray onto cool, rinsed surfaces, leave for 2 minutes, agitate and rinse. Heavy Duty Wheel Cleaner is acid free too, removes brake dust and caked-on dirt, and also works as a paint decontamination spray for embedded fallout before polishing.

Shop more quick detailers, paint sealants and wheel cleaners.

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