---
product_id: 20828133
title: "NOS Silver Seal Radiator Sealer Stop Leak Powder NOS - 21 g"
brand: "westco"
price: "1 zł"
currency: PLN
in_stock: false
reviews_count: 8
url: https://www.desertcart.pl/products/20828133-nos-silver-seal-radiator-sealer-stop-leak-powder-nos-21
store_origin: PL
region: Poland
---

# NOS Silver Seal Radiator Sealer Stop Leak Powder NOS - 21 g

**Brand:** westco
**Price:** 1 zł
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** NOS Silver Seal Radiator Sealer Stop Leak Powder NOS - 21 g by westco
- **How much does it cost?** 1 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/20828133-nos-silver-seal-radiator-sealer-stop-leak-powder-nos-21)

## Best For

- westco enthusiasts

## Why This Product

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

## Description

Directions for use silver seal stop leak: Dilute 1 dose in 20 cl of coolant Pour into the radiator or expansion vessel Level the coolant Allow the engine 15 minutes of operation with the heater in maximum position

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Silicone |
| Brand | Westco |
| Style | Compact |
| Item Weight | 21 Grams |
| Water Resistance Level | Water Resistant |
| Item Form | Powder |
| UPC | 052284019902 |
| Color | Silver |
| Package Dimensions | 2.8 x 1.6 x 1.1 inches |
| Item Weight | 0.741 ounces |
| ASIN | B000AME522 |
| Is Discontinued By Manufacturer | No |
| Date First Available | March 10, 2014 |

## Product Details

- **Material:** Silicone
- **Brand:** Westco
- **Style:** Compact
- **Item Weight:** 21 Grams
- **Water Resistance Level:** Water Resistant

## Images

![NOS Silver Seal Radiator Sealer Stop Leak Powder NOS - 21 g - Image 1](https://m.media-amazon.com/images/I/51wu8AvxlcL.jpg)
![NOS Silver Seal Radiator Sealer Stop Leak Powder NOS - 21 g - Image 2](https://m.media-amazon.com/images/I/614q6cyWNkL.jpg)

## Questions & Answers

**Q: Is this meatallic flakes?**
A: Its more like a silver powder

**Q: Instructions how to do it**
A: I didn’t  have access to my radiator so I drained some, took off my upper hose, reclamped, topped off coolant and ran til hot and thermostat opened. Unfortunately my leak was to big and had to do repairs

**Q: why is vehicle still heating up**
A: radiator blocked up? has to be done very thoroughly according to instructions.

**Q: How do open it? Do i put  directly in thr radiator?**
A: I cut the top off and pour directlt into radiator  with clean water and then run the heck out out of it

## Customer Reviews

### ⭐⭐⭐⭐ worked great
*by F***B on August 15, 2019*

sealed my radiator up fast

### ⭐⭐⭐⭐⭐ Stopped a Leak!
*by J***Y on September 23, 2019*

So far this product has been a wonderful blessing. Had a leak in an '01 F-150 coming from the manifold around a hose fitting. Used the Silver Seal and stopped the leak. Estimates were $500.00 to $1200.00. The SS was $10.00! Still checking the heat gauges and radiator level but so far so good. Follow directions.

### ⭐⭐⭐⭐⭐ real deal
*by R***R on December 13, 2019*

NEW old stock, had not seen this for a very long time.

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**Shop now:** [https://www.desertcart.pl/products/20828133-nos-silver-seal-radiator-sealer-stop-leak-powder-nos-21](https://www.desertcart.pl/products/20828133-nos-silver-seal-radiator-sealer-stop-leak-powder-nos-21)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-26*