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Seal Bond® 495 High Performance Adhesive/Sealant

1 of 12 products in this brand
Seal Bond® 495 High Performance Adhesive/Sealant is a high-strength, one-component, elastomeric adhesive & sealant that permanently adheres to many construction materials without the use of primer. SB 495 is a low odor and 100% solids formula designed for interior and exterior construction applications. SB 495 is an environmentally friendly formula that contains no solvents or isocyanates and yields very low VOC’s.

Product Type: 1K (1 component) Adhesive, 1K (1 component) Sealant

Compatible Substrates & Surfaces: Concrete, Metal, Wood

Application Method: Gun

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Knowde Enhanced TDS

Identification & Functionality

Chemistry
Hybrid Polymer

Features & Benefits

Features
  • 100% solids - no shrinkage
  • Fast skin over - low dirt pickup
  • Safe to Use - solvent & Isocyanate free
  • Ultra-low VOC’s, 28.1 g/L
  • May contribute to LEED V4 EQ Material Resource Credit 4.1 - Adhesives and Sealants
  • Bonds to most common building substrates
  • Remains flexible to absorb expansion and contraction
High Performance Durability
  • Does not dry or become brittle
  • Water resistant
  • Permanent elastomeric bond

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Ease of Installation
  • Single component high solids formula.
  • Easily gunnable between 40°F and 100°F.
  • Cures rapidly to reach optimum strength within 7 - 14 days, full cure 21 days.
  • SB 495 can be installed on damp surfaces.
Product Application

Application

Remove all dirt, oil, loose paint, frost and other contamination from all working surfaces. Maintain SB 495 at room temperature before applying to ensure easy gunning and tooling. Test and evaluate to ensure adequate adhesion. Carefully gun the sealant with a smooth, continuous bead. If tooling is needed, do so within fifteen minutes of application.

Concrete

Prior to application remove any residual contamination by mechanical abrasion, sand blasting or power washing. On green concrete, remove all release agents and loose concrete. Dry all visible and/or standing water. Install an appropriate backer rod to avoid three-point bonding.

Metal

Prepare all metal to ensure maximum adhesion. Remove all rust, scale and residue using a wire brush. Remove films, loose or inappropriate coatings and oils with an appropriate solvent such as alcohol. Seal Bond recommends that coated substrates be tested for proper adhesion prior to starting a project to determine suitability for use.

Wood

Wood should be clean, sound and dry prior to sealant application. Allow treated wood to weather for six months prior to application. Remove all coatings and paint to ensure proper adhesion. SB 495 is not recommended for use on fire retardant lumber.

Priming

In most applications SB 495 will not require a primer. However, certain substrates may require a primer to ensure a long lasting bond and weatherproof seal. It is the applicator’s responsibility to determine whether or not a primer is needed in their specific application.

Clean-up

Clean tools with an appropriate solvent such as alcohol.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
VOC28.1g/LASTM C1250
Skinover Time (50% RH, 70°F)15.0minASTM C679
Density13.02lb/gal
Hardness55.0ASTM D676 (Shore A)
Shear Strength208.0psiASTM D1002
Peel Strength (Aluminum)23.1pliASTM D903
Peel Strength (Mortar)23.6pliASTM D903
Peel Strength (Glass)25.0pliASTM D903
Peel Strength (Pine)22.4pliASTM D903
Peel Strength (PVC)22.8pliASTM D903
Peel Strength (Cold Rolled Steel)24.0pliASTM D903
Peel Strength (Cementitous Siding)22.0pliASTM D903
Peel Strength (Kynar® PVDF Coated Metal)27.8pliASTM D903
Tensile287.0psiASTM D412-06
Elongation at Break400.0%ASTM D412-06
Viscosity (1 rpm)3298000.0cpsASTM D2196-10
Viscosity (2 rpm)1860000.0cpsASTM D2196-10
Viscosity (10 rpm)601000.0cpsASTM D2196-10
Movement±35%ASTM C920

Regulatory & Compliance

Standards & Compliance
  • May contribute to LEED V4 EQ Material Resource Credit 4.1 - Adhesives and Sealants
  • ASTM C920, Type S, Grade NS, Class 35 Uses NT, T, G, A & O
  • Federal Specification TT-S-00230-C Type II, Class B
  • Corps of Engineers CRD-C-541, Type II, Class B
  • Conforms to OTC Rule for Sealants and Caulks
  • Meets requirements of California Regs: CARB, BAAQMD and SCAQMD
  • Conforms to USDA Requirements for Non-food Contact

Safety & Health

Precautionary Statements
  • Do not use until all instructions and safety precautions have been read and understood.
  • Wear protective gloves, protective clothing and eye protection.
  • Wash contaminated clothing before reuse.
  • Contaminated work clothing should not be allowed out of the workplace.
  • If on skin - Wash exposed body areas with soap and water.
  • If in eyes - Rinse with water, remove contact lenses and continue rinsing.
  • If exposed or concerned get medical advise/attention.

Packaging & Availability

Packaging & Availability
  • 10.1 oz. (300 ml) cartridges - 24 tubes/case, 45 cases/pallet
  • Available in colors, white, gray and black.
  • Additional colors available upon request.

Storage & Handling

Material Storage and Disposal
  • Store securely between 60°F - 80°F in unopened container.
  • Recommended shelf life is 12 months from date of manufacture on bottom of tube.
  • Keep tube tightly sealed.
  • Dispose of contents/container in accordance with Local/Regional/National/International Regulations.
Shelf Life

The shelf life is 12 months for an unopened container from the date of manufacture.