---
product_id: 5611514
title: "ASI 388 Clear Electronic Grade Silicone - 2.8 oz Squeeze Tube"
brand: "asi"
price: "€ 23.03"
currency: EUR
in_stock: true
reviews_count: 8
category: "Gordon Glass Co."
url: https://www.desertcart.com.cy/products/5611514-asi-388-clear-electronic-grade-silicone-2-8-oz-squeeze
store_origin: CY
region: Cyprus
---

# High dielectric strength Waterproof & corrosion-resistant Wide temp range -57°C to +204°C ASI 388 Clear Electronic Grade Silicone - 2.8 oz Squeeze Tube

**Brand:** asi
**Price:** € 23.03
**Availability:** ✅ In Stock

## Summary

> ⚡ Seal Smart, Stay Connected — The Silicone That Works as Hard as You Do!

## Quick Answers

- **What is this?** ASI 388 Clear Electronic Grade Silicone - 2.8 oz Squeeze Tube by asi
- **How much does it cost?** € 23.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/5611514-asi-388-clear-electronic-grade-silicone-2-8-oz-squeeze)

## Best For

- asi enthusiasts

## Why This Product

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

## Key Features

- • **Broad Temperature Resilience:** Performs flawlessly from freezing -57°C to scorching +204°C, perfect for any climate or device.
- • **Unrivaled Electronic Protection:** Safeguards sensitive metals like copper, brass, and silver with a non-corrosive, neutral-cure formula.
- • **Ultimate Flexibility & Durability:** Cures to a tough, permanently flexible rubber that withstands ozone, UV, and airborne chemicals.
- • **Waterproof & Electrically Insulating:** Repels water and resists electrical tracking to keep your electronics safe and fully operational.
- • **Precision Application in Confined Spaces:** Low-odor, neutral cure ideal for tight, enclosed environments without compromising air quality.

## Overview

ASI 388 Clear Electronic Grade Silicone is a premium, one-part RTV silicone sealant designed specifically for electronic and electrical applications. It offers exceptional dielectric properties, waterproof protection, and resistance to extreme temperatures (-57°C to +204°C). Its neutral-cure, non-corrosive formula ensures safe use on sensitive metals like copper and silver, making it the go-to choice for professionals seeking reliable, long-lasting insulation and sealing in confined or large-scale production environments.

## Description

ASI 388 electronic grade silicone is a one-part, moisture- curing RTV (room temperature vulcanizing) silicone sealant/adhesive that is non-slump and cures to form a tough, permanently flexible rubber. The non-corrosive curing system of ASI 388 electronic grade silicone makes it ideally suited for protecting, sealing and insulating corrosion-sensitive electronic and electrical materials such as copper, brass, silver, etc. ASI 388 has been specifically formulated for use in electrical/electronic production and assembly because it: -has good dielectric properties -has high surface resistivity -resists electrical tracking -repels water to protect electrical properties ASI 388 electronic grade silicone is a neutral-cure silicone that emits no objectionable odors during cure and is ideally suited for use in confined areas. However, adequate ventilation should be provided when ASI 388 is used in large-scale production. ASI 388 is a 100% silicone and has excellent resistance to: -ozone -UV -airborne chemicals -temperature changes from -57 C to +204°C (-70°F to +400°F)

Review: Keep it in a zip lock bag after opening. - It works well as a silicone but does take quite longer to cure than say GE Supreme. I ended up putting the project in the garage where it was more humid to help curing time. When I first put the tube away after use, I placed a piece of Saran Wrap (Stretch-Tight actually) between the nozzle and the cap to create an air-tight seal. It started to cure in the nozzle after just a week. The second tine I used it I did the same but also put the entire tube in a ziplock sandwich bag and squeezed out the air. That seems to have done the trick. Next time I opened it two weeks later it was flowing out as if I had a new tube. I'll take everyone's word for the safety around electronics (used in an outdoor LED project).
Review: Great for electronics - I used this primarily to vibration-proof a somewhat-risky component substitution for an obsolete part. I would have liked something that cured a bit stiffer, but it's probably perfectly fine. And making it stiffer would probably make it less general-purpose than it is. Seems like a quality product. Noobs beware - if it smells like vinegar, IT'S NOT FOR ELECTRONICS! Do it right or don't do it. This is the right stuff.

## Features

- The non-corrosive curing system of this electronic grade silicone makes it ideally suited for protecting, sealing and insulating corrosion-sensitive electronic and electrical materials such as copper, brass, silver, etc
- This electronic grade silicone is a neutral-cure silicone that emits no objectionable odors during cure and is ideally suited for use in confined areas; However, adequate ventilation should be provided when used in large-scale production
- Specifically formulated for use in electrical/electronic production and assembly

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0063U2RT8 |
| Best Sellers Rank | #11,173 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #25 in Silicone Adhesives |
| Brand | ASI |
| Color | Clear,Silver |
| Date First Available | November 5, 2011 |
| Full Cure Time | 7 Days |
| Is Discontinued By Manufacturer | No |
| Item Form | Paste |
| Item Weight | 3.52 ounces |
| Liquid Volume | 2.8 Fluid Ounces |
| Manufacturer | GordonGlass |
| Material | Silicone |
| Number of Items | 1 |
| Package Dimensions | 7.52 x 2.05 x 1.3 inches |
| Surface Recommendation | Pipe, Counter Top, Window, Door, Sink, Tub, Walls |
| Unit Count | 2.8 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** ASI
- **Color:** Clear,Silver
- **Full Cure Time:** 7 Days
- **Item Weight:** 0.22 Pounds
- **Liquid Volume:** 2.8 Fluid Ounces

## Images

![ASI 388 Clear Electronic Grade Silicone - 2.8 oz Squeeze Tube - Image 1](https://m.media-amazon.com/images/I/61xK5SRrz8L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Keep it in a zip lock bag after opening.
*by P***Y on October 12, 2025*

It works well as a silicone but does take quite longer to cure than say GE Supreme. I ended up putting the project in the garage where it was more humid to help curing time. When I first put the tube away after use, I placed a piece of Saran Wrap (Stretch-Tight actually) between the nozzle and the cap to create an air-tight seal. It started to cure in the nozzle after just a week. The second tine I used it I did the same but also put the entire tube in a ziplock sandwich bag and squeezed out the air. That seems to have done the trick. Next time I opened it two weeks later it was flowing out as if I had a new tube. I'll take everyone's word for the safety around electronics (used in an outdoor LED project).

### ⭐⭐⭐⭐⭐ Great for electronics
*by A***D on December 6, 2025*

I used this primarily to vibration-proof a somewhat-risky component substitution for an obsolete part. I would have liked something that cured a bit stiffer, but it's probably perfectly fine. And making it stiffer would probably make it less general-purpose than it is. Seems like a quality product. Noobs beware - if it smells like vinegar, IT'S NOT FOR ELECTRONICS! Do it right or don't do it. This is the right stuff.

### ⭐⭐⭐⭐⭐ Keeps the connections dry and working well for me.
*by G***E on September 14, 2025*

Used this on my out door lighting wiring on my lightly covered porch. I have the wiring in electrical boxes but this is just a precaution that seems to have done the job. No moisture has gotten into the wiring as far as I can tell.

## Frequently Bought Together

- Clear Electronic Grade Silicone - 2.8 oz Squeeze Tube
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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-06*