---
product_id: 15682812
title: "Rubber Seal Protectant – Protects & Conditions Seals on Doors, Windows, Hoods, Trunks Rejuvenates Color & Flexibility of Old & Dry Seals Weatherproofing & UV Protection, 3.4 fl.oz"
brand: "303 products"
price: "¥3001"
currency: JPY
in_stock: true
reviews_count: 13
category: "303 Products"
url: https://www.desertcart.jp/products/15682812-rubber-seal-protectant-protects-and-conditions-seals-on-doors-windows
store_origin: JP
region: Japan
---

# Non-Greasy, Clean Finish Restores Flexibility & Moisture UV Protection Shield Rubber Seal Protectant – Protects & Conditions Seals on Doors, Windows, Hoods, Trunks Rejuvenates Color & Flexibility of Old & Dry Seals Weatherproofing & UV Protection, 3.4 fl.oz

**Brand:** 303 products
**Price:** ¥3001
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with lasting protection and style!

## Quick Answers

- **What is this?** Rubber Seal Protectant – Protects & Conditions Seals on Doors, Windows, Hoods, Trunks Rejuvenates Color & Flexibility of Old & Dry Seals Weatherproofing & UV Protection, 3.4 fl.oz by 303 products
- **How much does it cost?** ¥3001 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/15682812-rubber-seal-protectant-protects-and-conditions-seals-on-doors-windows)

## Best For

- 303 products enthusiasts

## Why This Product

- Trusted 303 products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Advanced UV Defense:** Protects seals from cracking, fading & sun damage
- • **Mess-Free Application:** Foam-tip applicator ensures precise, easy use without waste
- • **All-Surface Versatility:** Perfect for rubber, vinyl & plastic on doors, windows & trim
- • **Deep Seal Revitalization:** Rejuvenates color & suppleness for a like-new feel
- • **Proven Longevity Booster:** Trusted 40+ years to extend seal life & prevent leaks

## Overview

303 Products Rubber Seal Protectant is a professional-grade formula designed to restore, protect, and condition rubber seals on vehicles. It penetrates deeply to rejuvenate old, dry seals by restoring their color and flexibility while providing powerful UV protection to prevent cracking and fading. The non-greasy finish keeps surfaces clean and dirt-free, and the built-in foam-tip applicator allows for precise, mess-free application. Backed by over 40 years of proven reliability, this 3.4 fl.oz protectant is essential for maintaining weatherproof seals on doors, windows, hoods, and trunks, enhancing vehicle longevity and appearance.

## Description

Buy 303 Products Rubber Seal Protectant – Protects & Conditions Seals on Doors, Windows, Hoods, Trunks Rejuvenates Color & Flexibility of Old & Dry Seals Weatherproofing & UV Protection, 3.4 fl.oz: Rubber Care - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Customers always notice how clean the door seals look! - I’ve been using 303 Rubber Seal Protectant as part of my car detailing work, and it has become one of those essential maintenance products I rely on. What stands out about this protectant is how well it rejuvenates and protects rubber seals on doors, windows, hood, and trunk. I applied it to my 10-year-old car as a test subject, and the difference is remarkable — the seals look very good, feeling supple and flexible again, not stiff or brittle like untreated seals often do. For older or weather-worn seals, I noticed the original color and pliability return, which really helps maintain a tight, weatherproof seal around the doors and windows. The application is very user-friendly. The built-in foam-tip applicator makes it easy to target seals precisely without wasting product or making a mess. During application, it’s normal to see small white drops of the product on the seals, but once it dries, it leaves a smooth, clean, and well-conditioned finish. I simply wipe any excess after a few minutes — quick and straightforward. As a professional detailer, I can say this is a nice finishing touch that clients always notice. It elevates the overall look of the vehicle and adds that extra sense of care and polish that people appreciate. I find it especially valuable in hotter climates or when the car sits outside often. The product’s UV protection helps prevent the seals from drying, cracking, or fading due to sun exposure, which can save from costly seal replacements down the road. After treating my car, and a few customer cars at the shop, the difference is noticeable: doors close smoother, seals feel healthier, and there’s a lower chance of leaks or wind noise. Because of that, I consider 303 Rubber Seal Protectant a must-have for anyone serious about car maintenance or detailing. In short, 303 Rubber Seal Protectant works exactly as advertised: it conditions, protects, and revitalizes rubber seals. It’s inexpensive, easy to use, and gives a real improvement in seal performance and longevity. I’ll definitely keep using it and recommend it to others who want to preserve their vehicle’s seals.
Review: Very good product - Very good product with easy applicator. Used before and this is a purchase for restock. This stuff works very goid. I like the 303 product line.

## Features

- REVITALIZE AND RESTORE RUBBER SEALS: 303 Rubber Seal Protectant penetrates deeply to rejuvenate and restore the color and flexibility of aging rubber seals, ensuring a "like-new" appearance and performance.
- VERSATILE APPLICATION ON MULTIPLE SURFACES: Perfect for use on all rubber, vinyl, and plastic surfaces, this protectant not only enhances the shine of your vehicle's seals but also works wonders on interior and exterior trim for comprehensive care.
- DEFEND AGAINST UV DAMAGE AND CRACKING: Our advanced formula provides powerful UV protection, shielding rubber seals and trim from harmful sun exposure to prevent fading, discoloration, and cracking over time.
- NON-GREASY FINISH FOR CLEAN SURFACES: Unlike traditional dressings, 303 Rubber Seal Protectant dries to a smooth, non-greasy finish, ensuring surfaces feel clean and avoiding the attraction of dirt and dust.
- USER-FRIENDLY APPLICATION: Designed for convenience, just simply wipe the applicator on any rubber surface or seal to achieve professional results effortlessly.
- PROVEN TO PROTECT: Backed by over 40 years of field-tested reliability, 303 Products safeguards your cars, boats, and outdoor furniture from natures harshest conditions. Preserving their appearances and ensuring they stand the test of time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00T44D1R2 |
| Best Sellers Rank | #2,482 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Rubber Care Products |
| Brand | 303 Products |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,004) |
| Date First Available | February 3, 2015 |
| Global Trade Identification Number | 00082043303249, 00082043303768 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.8 ounces |
| Item model number | 30324 |
| Manufacturer | Gold Eagle Co. |
| Manufacturer Part Number | 30324 |
| Material | Plastic |
| Model | 30324 |
| Number of Items | 1 |
| Product Dimensions | 1.63"L x 1.63"W |
| Recommended Uses For Product | Conditioning and protecting rubber seals on doors, windows, hoods, trunks |
| UPC | 082043303249 082043303768 |
| Unit Count | 3.4 Fluid Ounces |

## Product Details

- **Brand:** 303 Products
- **Color:** White
- **Material:** Plastic
- **Product Dimensions:** 1.63"L x 1.63"W
- **Recommended Uses For Product:** Conditioning and protecting rubber seals on doors, windows, hoods, trunks

## Images

![Rubber Seal Protectant – Protects & Conditions Seals on Doors, Windows, Hoods, Trunks Rejuvenates Color & Flexibility of Old & Dry Seals Weatherproofing & UV Protection, 3.4 fl.oz - Image 1](https://m.media-amazon.com/images/I/51QK8YaFB8L.jpg)

## Questions & Answers

**Q: Is this just a small bottle/applicator of 303 Aerospace Protectant?**
A: I'm willing to bet it's just AT-205 Re-seal, watered down. Back when I used to watch Scotty Kilmer (before he got super whiney & political), he showed that AT-205 & water will "recondition rubber" like it does when used in a trans/engine/power steering system/diff. I use Dielectric Grease (pure silicone grease) to keep the rubber on my car nice & supple. I apply it with my hand, let it sit & soak in for a few minutes, massage it in a little, then wipe it down. It works beautifully, and keeps the rubber (tires are treated differently) looking/feeling/performing as good as or better than new.

**Q: Can this be used on sunroof seals?**
A: I do not see why it can not be used on sunroof seals. I just purchased the rubber seal protectant but I have used other 303 products and love them.

**Q: Is this product better or worse than einzette gummi pflege? thanks!**
A: Hello,Einzette gp is generally used for interior rubber, as it is water-based and will get runny when wet.  It is still very effective on exterior rubber-like components if buffed dry tokeep excess liquid at a minimum.  Einzette can be used if you are willing to work just a bit to buff out your exterior rubber to a nicw shine; it is not a spray-and-forget type ofrubber protectant.I sure hope this helps.

**Q: Can the applicator be refilled once all 303 protectant is used? Or is this a sealed cap that once it's empty you have to buy a new one at $9.98.**
A: where to buy 303 protectant at  $9.98
Norm -

## Customer Reviews

### ⭐⭐⭐⭐⭐ Customers always notice how clean the door seals look!
*by K***O on November 26, 2025*

I’ve been using 303 Rubber Seal Protectant as part of my car detailing work, and it has become one of those essential maintenance products I rely on. What stands out about this protectant is how well it rejuvenates and protects rubber seals on doors, windows, hood, and trunk. I applied it to my 10-year-old car as a test subject, and the difference is remarkable — the seals look very good, feeling supple and flexible again, not stiff or brittle like untreated seals often do. For older or weather-worn seals, I noticed the original color and pliability return, which really helps maintain a tight, weatherproof seal around the doors and windows. The application is very user-friendly. The built-in foam-tip applicator makes it easy to target seals precisely without wasting product or making a mess. During application, it’s normal to see small white drops of the product on the seals, but once it dries, it leaves a smooth, clean, and well-conditioned finish. I simply wipe any excess after a few minutes — quick and straightforward. As a professional detailer, I can say this is a nice finishing touch that clients always notice. It elevates the overall look of the vehicle and adds that extra sense of care and polish that people appreciate. I find it especially valuable in hotter climates or when the car sits outside often. The product’s UV protection helps prevent the seals from drying, cracking, or fading due to sun exposure, which can save from costly seal replacements down the road. After treating my car, and a few customer cars at the shop, the difference is noticeable: doors close smoother, seals feel healthier, and there’s a lower chance of leaks or wind noise. Because of that, I consider 303 Rubber Seal Protectant a must-have for anyone serious about car maintenance or detailing. In short, 303 Rubber Seal Protectant works exactly as advertised: it conditions, protects, and revitalizes rubber seals. It’s inexpensive, easy to use, and gives a real improvement in seal performance and longevity. I’ll definitely keep using it and recommend it to others who want to preserve their vehicle’s seals.

### ⭐⭐⭐⭐⭐ Very good product
*by B***W on February 1, 2026*

Very good product with easy applicator. Used before and this is a purchase for restock. This stuff works very goid. I like the 303 product line.

### ⭐⭐⭐⭐ Great but doesn't work rightside up
*by A***R on May 1, 2025*

applicator will be a pain to use upside down, otherwise it works as designed and it is great just wish I could buy it as a liquid or have an applicator to do it with the bottle standing up not flipped over as I have seals 360 on my doors.

## Frequently Bought Together

- 303 Products Rubber Seal Protectant – Protects & Conditions Seals on Doors, Windows, Hoods, Trunks | Rejuvenates Color & Flexibility of Old & Dry Seals | Weatherproofing & UV Protection, 3.4 fl.oz
- 303 Products Automotive Protectant Spray - Helps Prevent Fading & Cracking, Repels Dust, Lint & Staining, Superior UV Protection & Restores Lost Color, Exterior & Interior Car Cleaning Supplies 16oz
- 303 Products 30588CSR Interior Cleaner - Safely Cleans Any Surface, Residue Free - Safe for Use on Touchless Touch Screens, Including LCD - Cleans Glass Streak Free, 16 fl. oz. Packaging May Vary

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-10*