Loctite 638 High Strength Fast Cure

Loctite 638 High Strength Fast Cure

LOCTITE® 638™ is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 0.25 mm and where maximum strength at room temperature is required

  • Technology: Acrylic
  • Application: Retaining
  • IDH: 1803365 - 50ml - 1803042 - 250ml
  • Chemical Type: Methacrylate Ester
  • Cure: Anaerobic - Secondary cure - Activator
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Overview

LOCTITE 638 is a high strength, fast curing, general purpose retaining compound.

LOCTITE® 638 is designed for the bonding of cylindrical fitting parts, particularly with narrow bond gaps approaching 0.25 mm. The product cures when confined in the absence of air between close-fitting metal surfaces and prevents loosening and leakage due to shock and vibration. It not only works on active metals but also on passive substrates, exhibiting robust cure performance. The product offers high-temperature performance and good oil tolerance, and tolerates minor surface contaminants.

  • Tolerates minor contaminants, including industrial oils
  • High strength on all metals, including passive substrates (e.g. stainless steel)
  • High temperature resistance
  • Ideal for shafts, gears, pulleys and similar cylindrical parts
  • DVGW Approval (EN 751-1): NG-5146AR0619
  • P1 NSF Reg. No.: 123010
  • WRAS Approval (BS 6920): 0511518

Specification

Technology Acrylic
Application Retaining
IDH 1803365 - 50ml - 1803042 - 250ml
Chemical Type Methacrylate Ester
Cure Anaerobic - Secondary cure - Activator
Fixture Time 4.0 minutes
Gap Fill 0.25mm
Strength Medium to High
Viscosity High

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Technical Sheet
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