---
product_id: 617481483
title: "Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive"
brand: "teakdecking systems"
price: "306.80 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Teakdecking Systems"
url: https://www.desertcart.tn/products/617481483-teakdecking-systems-10oz-marine-caulk-cartridge-black-premium-quality-sis440
store_origin: TN
region: Tunisia
---

# 48-hour full cure time highest UV & chemical resistance 10oz premium marine polymer Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive

**Brand:** teakdecking systems
**Price:** 306.80 DT
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal your deck like a pro—because your boat deserves the best!

## Quick Answers

- **What is this?** Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive by teakdecking systems
- **How much does it cost?** 306.80 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/617481483-teakdecking-systems-10oz-marine-caulk-cartridge-black-premium-quality-sis440)

## Best For

- teakdecking systems enthusiasts

## Why This Product

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

## Key Features

- • **Perfect Seam Finish:** Designed for 3-10mm seams, this caulk sands easily to a smooth, first-class appearance that elevates your boat’s aesthetic and longevity.
- • **Effortless Application:** Thixotropic, primer-free paste that won’t drip or sag—cut your project time with a clean, one-step process that’s eco-friendly and safe.
- • **Marine-Grade Durability:** Formulated with a one-part silane polymer for unmatched UV and chemical resistance, ensuring your teak deck stays flawless season after season.
- • **Reliable Cure & Stability:** Achieves full adhesion and flexibility in just 48 hours at 68°F, outperforming polysulfide and polyurethane alternatives for lasting results.
- • **Trusted by Pros Worldwide:** Backed by 35 years and over 50,000 decks installed, this ISO 9001-certified caulk is the go-to choice for boat builders, marinas, and discerning owners.

## Overview

Teakdecking Systems SIS440 is a premium 10oz marine caulk cartridge engineered specifically for teak deck seams. Featuring a one-part silane polymer, it offers superior UV and chemical resistance, flexibility, and easy sanding. With a 48-hour cure time and primer-free application, it delivers a first-class finish that extends deck life. Trusted by professionals for over 35 years, this non-corrosive, environmentally friendly sealant is ideal for marine and wood deck projects.

## Description

SIS440 Caulk is the proven leader in the marine industry and was developed specifically for teak deck seams. It is a one-part, paste-like neutral cure formulation and when exposed to moisture in the air, it reacts to form a tough, flexible solid rubber compound. The sealant does not sag during cure, and has excellent temperature stability and chemical resistance once cured. Because the sealant is neutral cure, it is non-corrosive to all substrates, will not damage the surrounding environment or structures, and provides minimum shrinkage. Caulk is easy to sand and will not clog sandpaper.Store in a dry area at temperatures above 32°F (0°C) and below 80°F (26°C). Do not expose to direct sunlight, extreme heat, or freezing. The sealant has a shelf life of 18 months from manufacture date. See “BEST USED BY” date on packaging. Not designed for use under the waterline.Other Applications:- Bedding deck equipment/hardware- Bedding parts (steps, pads, etc.)- Caulk seams in other wood decks- Edges around sealed windows- ConstructionAbout TDS SIS440 Caulk:More than 50,000 decks manufactured and installed in 35 years; 166 miles (267 km) of caulked seams per year. Well-d and proven in hot or cold climates. Used by boat builders, boat repair yards, marinas, private boat owners, cruise ships, and ship chandleries

Review: My view - Excellent product. Not easily found in stores
Review: The perfect item to fill in gaps in wood on boats. - We used it extensively on the gaps in the teak panels that decorate the top sides of the hull on my sailboat. It’s been several years and they still look great.

## Features

- HIGH QUALITY MARINE POLYMER || 10oz cartridge of black caulk - One-part silane polymer - Forms a solid rubber compound with highest rated UV resistance - Excellent resistance to chemicals - Superior temperature stability - Easy to sand - Improves project turnover time
- FLEXIBLE & PRIMER-FREE || Thixotropic paste which does not drip or sag - Easy to work because it stays flexible - One-step process saves application time - No solvents - Environmentally friendly - Safe for work environment - More economical - Less waste
- FIRST-CLASS APPEARANCE || Use in seams from 3 to 10mm wide to achieve first-class appearance - Seam depth should be equal to or greater than the seam width - Caulk must fill to bottom of seam - Bond-breaker tape recommended for seams of 5mm (3/16”) or deeper - Full depth caulk seams extend teak deck life
- CURE TIME || Cures to provide better adhesion, longevity and appearance as compared to polysulfide, polyurethane and MS polymers - Black caulk is ready for sanding after a minimum of 48 hours at 68°F (20°C) - This is based on seams ¼”x¼” (6.4mmx6.4mm), larger seams may require additional time
- PROPERTIES || Available in white and gray - Product has 18-month shelf life from date of manufacture (printed on bottle) - Meets Federal Specifications & ASTM C920 - Manufactured in an ISO 9001 facility

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CFN1LFS |
| Best Sellers Rank | #121,987 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #164 in Caulk |
| Brand | Teakdecking Systems |
| Brand Name | Teakdecking Systems |
| Color | Black |
| Colour | Black |
| Customer Reviews | 4.6 out of 5 stars 99 Reviews |
| Full Cure Time | 48 Hours |
| Full cure time | 48 Hours |
| Initial Hardening Time | 48 Hours |
| Initial hardening time | 48 Hours |
| Item Form | Strip |
| Item Weight | 10 Ounces |
| Item weight | 10 Ounces |
| Liquid Volume | 10 Fluid Ounces |
| Liquid volume | 10 Fluid Ounces |
| Manufacturer | TDS |
| Material Type | Rubber |
| Maximum Gap Fill | 10 Millimeters |
| Model | TDS300BL |
| Number of Items | 1 |
| Part Number | TDS300BL |
| Surface Recommendation | Deck, Window, Wood |
| UPC | 616641416997 |
| Unit Count | 10 Fluid Ounces |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Teakdecking Systems
- **Colour:** Black
- **Full cure time:** 48 Hours
- **Item weight:** 10 Ounces
- **Liquid volume:** 10 Fluid Ounces

## Images

![Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 1](https://m.media-amazon.com/images/I/71JimIs71lL.jpg)
![Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 2](https://m.media-amazon.com/images/I/711ix1ZW1jL.jpg)
![Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 3](https://m.media-amazon.com/images/I/51qujgfwJ-L.jpg)
![Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 4](https://m.media-amazon.com/images/I/51do44kuaEL.jpg)
![Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive - Image 5](https://m.media-amazon.com/images/I/41PltHCdoGL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ My view
*by K***R on 23 March 2026*

Excellent product. Not easily found in stores

### ⭐⭐⭐⭐⭐ The perfect item to fill in gaps in wood on boats.
*by W***I on 23 July 2026*

We used it extensively on the gaps in the teak panels that decorate the top sides of the hull on my sailboat. It’s been several years and they still look great.

### ⭐⭐⭐ Yin and yang
*by C***M on 5 June 2026*

This is a 5 star caulking in a 1 star receptacle. I’ve just ordered my 3rd tube so I might complete my stunning project with this superior marine grade, sticky like tar, thicker than Arkansas mud, beautiful dark ebony caulking… the first two tubes puked out a small percentage of the caulking out the back (plunger) side creating a jammed caulking gun and loss of at least an ounce of the highest priced caulking I’ve ever purchased (that I’ve estimated approximately $2.59 of lost caulking per tube or the equivalent of 1/2 gallon of petrol in today’s inflated prices)… and I’ll probably purchase the same product next time hopeful that the supplier will decide to take care of their loyal passive aggressive customers by investing in a tube that’s structurally sound enough to function adequately to squeeze this extremely thick product into a tiny nozzle and out into the desired crevasse or crevice (depending upon the task at hand) without wasting a morsel out the tail.

## Frequently Bought Together

- Teakdecking Systems - 10oz Marine Caulk Cartridge, Black - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive
- Teakdecking Systems Reefing Hook - Designed for Caulk Removal Before Re-Caulking - Blade Width: 2.5mm, Overall Tool Length: 8.5in - Comfortable & Easy to Use
- Teakdecking Systems - 10oz Marine Caulk Cartridge, White - Premium Quality - SIS440 - for Teak Deck Seams - Provides First Class Appearance - UV & Chemical Resistant, Non-Corrosive

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-03*