---
product_id: 77217384
title: "Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3\" x 100 ft., Silver"
brand: "shurtape"
price: "561.86 DT"
currency: TND
in_stock: true
url: https://www.desertcart.tn/products/77217384-shurtape-sf-685-si3100-1roll-sf-685-shurmastic-butyl-rubber
store_origin: TN
region: Tunisia
---

# Moisture-resistant Air-tight sealing High-temperature range Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3" x 100 ft., Silver

**Brand:** shurtape
**Price:** 561.86 DT
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it, don’t feel it! The ultimate tape for modern duct systems.

## Quick Answers

- **What is this?** Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3" x 100 ft., Silver by shurtape
- **How much does it cost?** 561.86 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/77217384-shurtape-sf-685-si3100-1roll-sf-685-shurmastic-butyl-rubber)

## Best For

- shurtape enthusiasts

## Why This Product

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

## Key Features

- • **Seal the Deal:** Achieve air-tight connections effortlessly!
- • **Superior Adhesion:** 255 ounces per inch adhesion to stainless steel.
- • **Eco-Friendly Choice:** Contributes to LEED points for green building.
- • **Flexible Application:** Perfect for both indoor and outdoor duct systems.
- • **Unmatched Durability:** Withstands extreme temperatures from -20F to 200F.

## Overview

Shurtape SF-685 ShurMASTIC Butyl Rubber Foil Tape is a high-performance sealing solution designed for both rigid and flexible air duct systems. Measuring 3 inches by 100 feet, this tape is engineered for air-tight and moisture-free sealing, making it ideal for improving indoor air quality and reducing utility costs. With a robust adhesive strength and a wide operating temperature range, it meets various industry standards and is a contributor to green building initiatives.

## Description

Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3" x 100 ft., Silver

## Features

- Shurtape SF-685 ShurMASTIC Butyl Rubber Foil Tape is used for air-tight and moisture-free sealing of rigid and flexible air duct systems. Used primarily to seal sheet metal duct in both indoor and outdoor applications and used as a permanent, water-resistant sealer.
- Use this duct mastic tape to mend poorly sealed connections; improve indoor air quality (since fewer pollutants circulating); lower utility bills; and burn fewer fossil fuels.
- Standards Met: UL 723 Classified; Pressure Classes SMACNA ½, 1,2,3,4, & 6; Seal Classes A, B, C; US Green Building Council – LEED Point contributor product; City of Los Angeles Approval RR #8069.
- Carrier/Backing: printed, aluminum foil. Adhesive: non-flammable, butyl rubber. Release Liner: LDPE (low-density polyethylene) film.
- Thickness: 17 mils (carrier, adhesive). Adhesion: 255 ounces per inch (to stainless steel test panel). Tensile Strength: 25 pounds per inch (longitudinal). Service/Operating Temperature: -20F to 200F. Application Temperature: 35F to 110F. Elongation: 560%. Flame Spread Index: 20. Smoke Development Index: 40. Core: 3-inch diameter.

## Images

![Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3" x 100 ft., Silver - Image 1](https://m.media-amazon.com/images/I/71NDRst+mpL.jpg)
![Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3" x 100 ft., Silver - Image 2](https://m.media-amazon.com/images/I/418EA9rnQHL.jpg)
![Shurtape SF-685/SI3100-1ROLL SF-685 ShurMASTIC Butyl Rubber Foil Tape: 3" x 100 ft., Silver - Image 3](https://m.media-amazon.com/images/I/71v0GeLmkML.jpg)

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**Shop now:** [https://www.desertcart.tn/products/77217384-shurtape-sf-685-si3100-1roll-sf-685-shurmastic-butyl-rubber](https://www.desertcart.tn/products/77217384-shurtape-sf-685-si3100-1roll-sf-685-shurmastic-butyl-rubber)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-21*