---
product_id: 27102944
title: "39728 Super Flex - 1 Pint"
brand: "sem"
price: "$4223"
currency: MXN
in_stock: true
reviews_count: 7
url: https://www.desertcart.mx/products/27102944-39728-super-flex-1-pint
store_origin: MX
region: Mexico
---

# Medium-High viscosity for smooth blending 16 fl oz precision volume Enhances flexibility on tough substrates 39728 Super Flex - 1 Pint

**Brand:** sem
**Price:** $4223
**Availability:** ✅ In Stock

## Summary

> 🛠️ Flex your ride’s style with SEM Super Flex – where durability meets flawless finish!

## Quick Answers

- **What is this?** 39728 Super Flex - 1 Pint by sem
- **How much does it cost?** $4223 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/27102944-39728-super-flex-1-pint)

## Best For

- sem enthusiasts

## Why This Product

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

## Key Features

- • **Clear & Clean:** Crystal-clear formula maintains original color integrity without compromising finish quality.
- • **Flex Your Finish:** Adds unmatched flexibility to urethanes, enamels, and lacquers for durable, crack-resistant coatings.
- • **Compact Powerhouse:** 1 pint (16 fl oz) can fits easily in your toolkit, ready to elevate your refinishing game.
- • **Pro-Grade Consistency:** Medium to high viscosity ensures smooth mixing and flawless application every time.
- • **Versatile Application:** Perfectly engineered for bumpers, vinyl convertible tops, and flexible plastics—no substrate left behind.

## Overview

SEM 39728 Super Flex is a 16-ounce liquid paint additive designed to enhance the flexibility of urethanes, enamels, and lacquers. Ideal for refinishing flexible vehicle parts like bumpers and vinyl tops, it features a medium to high viscosity for smooth application and a clear finish that preserves color integrity. This professional-grade formula prevents cracking and ensures long-lasting durability on flexible substrates.

## Description

Super SEM Flex is a paint additive that adds flexibility to urethanes, enamels and lacquers. Perfect for refinishing flexible substrates such as bumpers, vinyl convertible tops and flexible plastics.

## Features

- New

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | SEM |
| Material | Vinyl |
| Item Form | Liquid |
| Special Feature | Flexible |
| Color | Clear |
| Item Package Quantity | 1 |
| Package Information | Can |
| Item Volume | 16 Fluid Ounces |
| Viscosity | Moderate to high viscosity (cannot determine exact value without further information) |
| Water Resistance Level | Not Water Resistant |
| Unit Count | 1.0 Count |
| Viscosity Level | Medium to High |
| UPC | 646786397288 |
| Global Trade Identification Number | 00646786397288 |
| Manufacturer | SEM |
| Model | 39728 |
| Item Weight | 11.2 ounces |
| Product Dimensions | 5.9 x 2.7 x 2.6 inches |
| Item model number | 39728 |
| Is Discontinued By Manufacturer | No |
| Exterior | Smooth |
| Manufacturer Part Number | 39728 |
| Special Features | Flexible |

## Product Details

- **Brand:** SEM
- **Material:** Vinyl
- **Item Form:** Liquid
- **Special Feature:** Flexible
- **Color:** Clear

## Images

![39728 Super Flex - 1 Pint - Image 1](https://m.media-amazon.com/images/I/41-wODn-GEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ good stuff
*by P***N on February 19, 2024*

I painted a plastic automotive bumper and used this flex additive. This is a vital chemical needed to ensure your paint doesn't flake off your painted plastic parts. (You also need adhesion promoter as prep).I can't remmber if I added this to the clear coat as well... honestly I am not a professional. I whacked out my bumper on a part of a truck tire on the highway, and I decieded to try this out. It has lasted me 6 months and looks pretty dang good, using some materials and tools off of Amazon.

### ⭐⭐⭐⭐⭐ No problem with the product
*by S***. on July 7, 2024*

Used this product with Nason base coat and clear also with speedokote performed well

### ⭐⭐⭐⭐⭐ sem flex
*by R***N on September 22, 2022*

work great

## Frequently Bought Together

- SEM 39728 Super Flex - 1 Pint
- SEM 39863 Plastic Adhesion Promoter Aerosol - 14.8 oz.
- SEM 39134 Flexible Primer Surfacer - 1 Quart

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**Shop now:** [https://www.desertcart.mx/products/27102944-39728-super-flex-1-pint](https://www.desertcart.mx/products/27102944-39728-super-flex-1-pint)

---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-20*