LOCTITE SI 595

Harmonization Code : 3919.10.80 | Other self-adhesive plastic rolls not exceeding 20 cm wide.

LOCTITE SI 595

Main features

  • Non-Slumping Sealant Formulation
  • Adhesion and Flexiblity
  • Non-Flammable Sealing Formulation

Product Description

LOCTITE® SI 595 is a one-component, room-temperature vulcanizing (RTV) acetoxy silicone sealant formulated to provide flexible, durable sealing and bonding for mechanical assemblies. Upon exposure to atmospheric moisture, it cures into a tough silicone rubber seal that resists aging, weathering, UV exposure, ozone, and thermal cycling without shrinking, cracking, or hardening. The clear silicone formulation offers excellent adhesion to most substrates and is commonly used for electrical insulation, trim bonding, and sealing applications involving ducts, vents, flues, doors, and windows.

Key Features & Benefits

  • One-component RTV acetoxy silicone sealant.
  • Clear appearance for discreet sealing applications.
  • Superior adhesion and flexibility.
  • Non-slumping thixotropic formulation.
  • Seals out moisture and contaminants.
  • Fills large seams and gaps.
  • Resistant to UV light, ozone, and thermal cycling.
  • NSF 51 certified and UL recognized.

Recommended Applications

  • Electrical insulation.
  • Lead and wire protection from mechanical shock.
  • Trim bonding.
  • Duct, vent and flue sealing.
  • Door and window sealing.
  • General-purpose mechanical assembly sealing.
Product Family

LOCTITE SI 595

Catalog Product

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
AppearanceAppearance
Clear
Specific GravitySpecific Gravity
1.01

Additional Information

Technical Properties

As-Supplied / Before-Processing Properties

Property Value Unit Condition
Technology Silicone RTV sealant
Chemical Type Acetoxy Silicone Moisture-curing system
Appearance Clear Uncured material
Components One Component No mixing required
Viscosity Thixotropic Paste Non-slumping
Odor Acetic Acid Characteristic cure odor
Specific Gravity 1.01 25°C
Extrusion Rate 350 - 750 g/min Typical
Tack-Free Time ≤45 minutes Surface cure
Technical Properties

After-Processing / Final-State Properties

Property Value Unit Condition / Method
Full Cure Time 24 hours Ambient moisture cure
Tensile Strength ≥0.8 N/mm² ISO 37, cured 1 week
Elongation at Break ≥275 % ISO 37
Shore Hardness ≥14 Shore A ISO 868
Environmental Resistance Excellent Resists weathering and aging
Thermal Cycling Resistance Excellent No hardening, shrinking or cracking
UV Resistance Excellent Outdoor sealing applications
Ozone Resistance Excellent Long-term durability
Food Equipment Compliance ANSI/NSF 51 For food equipment applications up to 204°C

Leading Brands Trust in Our Products and Services

  • Jabil
  • Linxens
  • Magna
  • Medtronic
  • NXP
  • Philips
  • Semikron
  • Teledyne
  • Thales
  • Vishay
  • ZF
  • AMS
  • Apple
  • Audi
  • Broadcom
  • Borgwarner
  • Bosch
  • Eaton
  • Henkel
  • Honeywell
  • Hysol
  • Intel
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