

-
Description for Bostik 965FS
A one-component, moisture curing, adhesive/sealant based upon Bostik Hybrid Technology. Significant product benefits include, fast skinning (<30 mins.), 100% solids, non-yellowing, contains no solvent (alcohols, xylene, etc.), and paint compatible.Application Type Bond, Seal 1 Part or 2 Part 1-Part Material Form Paste Substrate Aluminum, FRP, Copper, Glass, Metals, Plastics, Polyester (GRP), PVC, Wood, Stainless Steel, Brass, Zinc, Galvanized steel, Painted or lacquered wood Industry Marine, Bonds/seals joints constructed of gelcoated fiberglass, Marine applications, Bonds/seals joints constructed of metals, Bonds/seals joints constructed of wood, Bonds/seals joints constructed of some plastics Manufacturer Bostik Chemistry Free of alcohols, acetone, MEK, xylene Cure Method Moisture Cure Temperature (°C) 25 Cure Time (min) 1,440 Can Be Used In Conjunction With These Materials Gelcoated fiberglass -
Technical Data for Bostik 965FS
Overview
-
1 Part or 2 Part
- 1-Part
-
Material Form
- Paste
-
Substrate
- Glass
- Metal - Metals
- Aluminum
- Copper
- Brass
- Zinc
- Plastic - Plastics
- Polyvinyl chloride (PVC) - PVC
- Wood - Painted or lacquered wood
- Composites - FRP
- Polyester - Polyester (GRP)
- Stainless Steel
- Galvanized Steel
-
Industry
- Marine - Marine applications
- Joints - Bonds/seals joints constructed of gelcoated fiberglass, Bonds/seals joints constructed of some plastics, Bonds/seals joints constructed of wood, Bonds/seals joints constructed of metals
- Other - Waterproofing welded seams and corrosion prevention of_x00D_ fastener heads, Approved for above and below-the-waterline applications, Seals around above and below-the-waterline through-hull fittings
-
Chemistry
- Solvent-Free - Free of alcohols, acetone, MEK, xylene
-
Application Method
- Caulking gun - manual caulk gun, pneumatic caulking dispenser
-
Cure Method
- Moisture / Condensation Cure - Moisture
-
Can Be Used In Conjunction With These Materials
- Other - Gelcoated fiberglass
Specifications
Cure Specs
Cure Temperature (°C) 25 Test Method Cure Time (min) 1,440 Test Method Tack Free Time (min) 30 Work / Pot Time (min) 40 Thixotropic Medium thixotrophy Bond Strength
Tensile Strength (psi) 65, 190, 255, 215 Test Method Hardness
Shore A Hardness 55 Test Method Elongation (%) 200 Test Method Modulus (psi) 65, 190 Test Method Other Properties
Specific Gravity 1.435 (g/cm3) % Solids (%) 100 Business Information
Shelf Life Details When stored at or below 80°F (27°C), Marine 965FS adhesive/sealant has a shelf life of 12 months from date of manufacture. Shelf Life Type From date of manufacture. Shelf Life (mon) 12 -
Best Practices for Bostik 965FS
-
Surface Preparation
Substrates should be free of all loose contamination, greases, oils, etc. Use Isopropyl alcohol or other approved solvent for substrate pretreatment.
-
Application
Application-Cartridge-Cut nozzle to desired bead size opening and puncture the inner foil seal. Place cartridge into either a manual or pneumatic caulking dispenser. Apply appropriate pressure to install 965FS so as to assure full contact (surface wetting) to promote sealing and adhesion performance. Tool and finish applied 965FS immediately to promote best mechanical adhesion and cure appearance. Use water or soapy water solution for tooling compound.
Sausage-Cut tip to desired shape and diameter. Place sausage into a manual or pneumatic caulking dispenser. Apply appropriate pressure to install 965FS so as to assure full contact (surface wetting) to promote sealing and adhesion performance. Tool and finish applied 965FS immediately to promote best mechanical adhesion and cure appearance. Use water or soapy water solution for tooling compound.
-
Clean-Up
Cleanup can be done with soapy water, Isopropyl Alcohol, and Bostik® Hand Towels and Specialty Adhesive Cleaner. Cured Marine 965FS can be removed using appropriate mechanical techniques.
-
-
Comparable Materials for Bostik 965FS
Spec Engine® Results
Popular Articles
Anaerobic Adhesives
Read ArticleTesting the effectiveness of surface treatments
Read ArticleInfographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation
Read ArticleWhat Are the Differences Between Adhesives and Sealants?
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/50%RH/0.125" |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
1,440 min | 77°F/50%RH/0.125" |
Tensile Strength Test Methods
Tensile Strength | Substrate | Test Method |
---|---|---|
65 psi | Modulus @ 25% | |
190 psi | Modulus @ 100% | |
255 psi | @ Break | |
215 psi | Aluminum-to-Aluminum | Aluminum-to-Aluminum, 0.062", speed—2-in./min. |
Elongation Test Methods
Elongation | Test Method |
---|---|
200 % | (AFTER 14 DAYS CURE AT 77°F AND 50% RH) (at Break) |
Modulus Test Methods
Modulus | Test Method |
---|---|
65 psi | Tensile Modulus @ 25% (AFTER 14 DAYS CURE AT 77°F AND 50% RH) |
190 psi | Tensile Modulus @ 100% (AFTER 14 DAYS CURE AT 77°F AND 50% RH) |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method |
---|---|
55 | AFTER 14 DAYS CURE AT 77°F AND 50% RH |