

-
Description for Bostik 920 FS Urethane
Outstanding weather resistance; strong flexible bonds.Application Type Bond, Seal 1 Part or 2 Part 1-Part Material Form Paste Substrate Aluminum, FRP, Metal, Plastics, Woods Industry Marine, Sealing window, Sealing door Manufacturer Bostik Chemistry Urethane Cure Method Moisture Cure Temperature (°C) 25, 25 Cure Time (min) Fast, 2,160 to 4,320, 20,160 Ozone Resistance Excellent Ozone resistance High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -40 Durability Tough -
Technical Data for Bostik 920 FS Urethane
Overview
-
1 Part or 2 Part
- 1-Part
-
Material Form
- Paste
-
Substrate
- Metal
- Aluminum
- Plastic - Plastics
- Wood - Woods
- Composites - FRP
-
Industry
- Other Transportation - Hull seams
- Marine
- Industrial - Keel joints, Under moldings
- Construction - Deck
- Construction Window - Sealing window
- Construction Door - Sealing door
-
Chemistry
- Polyurethane - Urethane
-
Application Method
- Dispenser - Gun
-
Cure Method
- Moisture / Condensation Cure - Moisture
Specifications
Cure Specs
Cure Temperature (°C) 25, 25 Test Method Cure Time (min) Fast, 2,160 to 4,320, 20,160 Test Method Set Time (min) Fast Tack Free Time (min) 90 Work / Pot Time (min) 70 Bond Strength
Peel Strength (piw) >25 Test Method Tensile Strength (psi) 267 Test Method Material Resistance
Ozone Resistance Excellent Ozone resistance UV Resistance Good Environmental Resistance Outstanding weather resistance High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -40 Hardness
Durability Tough Shore A Hardness 37 Test Method Elongation (%) 850 Test Method Flexibility Permanent elastomeric, Strong Flexible Modulus (psi) 65 Test Method Business Information
Shelf Life Details When stored at or below 80°F (27°C), Bostik Marine 920 FS polyurethane sealant has a shelf life of nine months from date of manufacture. Shelf Life Temperature (°F) <81 Shelf Life Type From date of manufacture Shelf Life (mon) 9 -
Best Practices for Bostik 920 FS Urethane
-
Clean-Up
Use Bostik® Hand & Tool Towels to clean excess sealant from all surfaces and tools while still uncured. Cured sealant can be removed with a sharp blade. NOTE: Cured sealant is usually very difficult to remove without altering or damaging the surface to which the sealant was applied.
-
-
Comparable Materials for Bostik 920 FS Urethane
Spec Engine® Results
Popular Articles
Infographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation
Read ArticleWhat Are the Differences Between Adhesives and Sealants?
Read ArticleTesting the effectiveness of surface treatments
Read ArticleAnaerobic Adhesives
Read ArticleSponsored Articles
Unique Advantages of Contact Adhesives
Read ArticleUsing LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of Materials
Read ArticleSylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:
Read ArticleCase Study: Creating reliable, corrosion-free bonds with LORD® 406 acrylic adhesive
Read ArticleFeatured Ads

Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
---|---|
25°C | 77°F AND 50% RH |
25°C | AFTER 14 DAYS CURE AT 77°F AND 50% RH |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
Fast | |
2,160 to 4,320 min | 77°F AND 50% RH |
20,160 min | AFTER 14 DAYS CURE AT 77°F AND 50% RH |
Peel Strength Test Methods
Peel Strength | Cure Time | Cure Temperature | Cure Humidity | Test Method |
---|---|---|---|---|
>25 piw | 20,160 min | 25°C | 50 % | AFTER 14 DAYS CURE AT 77°F AND 50% RH |
Tensile Strength Test Methods
Tensile Strength | Cure Time | Cure Temperature | Cure Humidity | Substrate | Test Method |
---|---|---|---|---|---|
267 psi | 20,160 min | 25°C | 50 % | Aluminum to Aluminum | AFTER 14 DAYS CURE AT 77°F AND 50% RH |
Elongation Test Methods
Elongation | Test Method |
---|---|
850 % | After 14 days cure at 77°F and 50% RH |
Modulus Test Methods
Modulus | Test Method |
---|---|
65 psi | @ 100% Elongation, After 14 days cure at 77°F and 50% RH |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method | Hardness Temperature |
---|---|---|
37 | After 14 days cure at 77°F and 50% RH | 25°C |