---
product_id: 294031248
title: "LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax"
brand: "loctite"
price: "66 zł"
currency: PLN
in_stock: false
reviews_count: 5
url: https://www.desertcart.pl/products/294031248-loctite-si-5900-silicone-based-flange-sealant-high-resistance-to
store_origin: PL
region: Poland
---

# Temp range -65°F to 500°F Multi-substrate adhesion (metal, plastic, glass) High oil resistance & non-corrosive LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax

**Brand:** loctite
**Price:** 66 zł
**Availability:** ❌ Out of Stock

## Summary

> 🛠️ Seal like a pro, last like a legend.

## Quick Answers

- **What is this?** LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax by loctite
- **How much does it cost?** 66 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/294031248-loctite-si-5900-silicone-based-flange-sealant-high-resistance-to)

## Best For

- loctite enthusiasts

## Why This Product

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

## Key Features

- • **Oil-Resistant Armor:** Engineered to resist oil and corrosion, ensuring long-lasting flange protection in demanding environments.
- • **Instant Seal, Low Odor:** Provides rapid adhesion with a low-volatility, low-odor formula that’s safe and efficient for professional use.
- • **Unmatched Thermal Endurance:** Withstands extreme temps from -65°F to 500°F, keeping your seals intact no matter the heat or cold.
- • **Zero Shrinkage, Zero Worries:** Formulated to never shrink, compress, crack, or relax, guaranteeing a flawless, durable seal every time.
- • **Versatile Surface Compatibility:** Bonds seamlessly to metal, plastic, glass, and ceramic—perfect for diverse industrial applications.

## Overview

LOCTITE® SI 5900 is a premium silicone-based flange sealant designed for high resistance to oil and extreme temperatures (-65°F to 500°F). It offers superior flexibility and adhesion across multiple substrates including metal, plastic, glass, and ceramic. This non-corrosive, low-odor sealant ensures no shrinkage or cracking, making it ideal for stamped sheet metal covers and demanding industrial applications.

## Description

Superior flexibility and adhesion. Provides instant seal. Non-corrosive, low odor, and low volatility

Review: Very expensive but a very good product
Review: Worth the money

## Features

- Capacity Vol. - 300 mL
- Temp. Range - -65.0 °F [Min], 500.0 °F [Max]
- Hardness - 35.0 Shore A
- Applications - Multi-Purpose
- Applicable Materials - Most Metals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002BWH0WQ |
| Best Sellers Rank | #133,956 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,893 in Universal Adhesives |
| Brand | Loctite |
| Brand Name | Loctite |
| Colour | As shown in the image |
| Customer Reviews | 4.2 out of 5 stars 34 Reviews |
| Global Trade Identification Number | 00079340201668 |
| Included Components | 1 |
| Item Form | Paste |
| Liquid Volume | 10.14 Fluid Ounces |
| Manufacturer | Loctite |
| Material Type | As shown in the image |
| Number of Items | 1 |
| Size of liquid in ounces | 10.14 Fluid Ounces |
| Surface Recommendation | Metal |
| UPC | 079340201668 |
| Unit Count | 1 Count |

## Product Details

- **Colour:** As shown in the image
- **Brand:** Loctite
- **Liquid Volume:** 10.14 Fluid Ounces
- **Item Form:** Paste
- **Surface Recommendation:** Metal

## Images

![LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax - Image 1](https://m.media-amazon.com/images/I/611m9PUgjpL.jpg)
![LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax - Image 2](https://m.media-amazon.com/images/I/61hvQJz6ZYL.jpg)
![LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax - Image 3](https://m.media-amazon.com/images/I/61y+NLdkHWL.jpg)
![LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax - Image 4](https://m.media-amazon.com/images/I/71RTc94CP0L.jpg)
![LOCTITE® SI 5900 | silicone-based| flange sealant |high resistance to oil| used in stamped sheet metal covers| metal, plastic, glass,ceramic substrates| does not shrink, compress, crack or relax - Image 5](https://m.media-amazon.com/images/I/71TbD3KjohL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very expensive but a very good product
*by M***D on 23 March 2023*



### ⭐⭐⭐⭐⭐ Worth the money
*by E***A on 2 January 2024*



### ⭐ $61 tube of caulk hard as a rock unusable garbage
*by C***N on 26 July 2021*



## Frequently Bought Together

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**Shop now:** [https://www.desertcart.pl/products/294031248-loctite-si-5900-silicone-based-flange-sealant-high-resistance-to](https://www.desertcart.pl/products/294031248-loctite-si-5900-silicone-based-flange-sealant-high-resistance-to)

---

*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-03*