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LOCTITE® SI 595 – Acetoxy silicone adhesive sealant – Electrical insulation, mechanical assemblies, duct sealing

  • Item Name: LOCTITE® SI 595
  • Manufacturer: Henkel
  • Product Category: RTV Silicone Sealant
  • Technologies: Silicone, Acetoxy silicone
  • Applications: Provides a flexible, non-slumping adhesive seal that protects assemblies from moisture and contaminants.
  • Color: Clear
  • Cure Type: Room temperature vulcanizing (RTV)
  • Package Size: Contact Techniq VN for details.
  • Shelf Life: Contact Techniq VN for details.

LOCTITE® SI 595 – Technical Data Summary

Known as: LOCTITE® Superflex® Clear RTV Silicone

1. Product Overview

LOCTITE® SI 595 is a single-component, room temperature vulcanizing (RTV) acetoxy silicone sealant. It forms a tough, flexible, and moisture-resistant silicone rubber seal upon curing. The product exhibits superior adhesion, flexibility, and resistance to aging, weathering, and thermal cycling.

Key Features:

  • Non-slumping thixotropic paste
  • Superior adhesion and flexibility
  • Seals out moisture and contaminants
  • Fills large cracks and seams
  • Non-flammable and non-toxic
  • Certified to ANSI/NSF Standard 51 for food equipment (≤204°C)
  • UL-recognized for plastics and components

2. Applications

  • Electrical insulation and protection of leads from mechanical shock
  • Trim bonding and ductwork sealing
  • Sealing of vents, flues, doors, and windows
  • Not recommended for concrete or oxygen-rich environments

3. Typical Properties

Uncured Material

Property Value
Specific Gravity @ 25°C 1.01
Extrusion Rate (g/min) 350 to 750
Odor Acetic Acid
Cure Mechanism Moisture cure (RTV)

Curing Performance

Property Value
Tack-Free Time (min) ≤45
Full Cure Time (hrs) 24

Cured Material (After 1 Week @ RT)

Property Value
Tensile Strength (ISO 37) ≥0.8 N/mm² (≥120 psi)
Elongation (ISO 37) ≥275%
Shore Hardness (ISO 868, A) ≥14

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