Henkel Adhesive Technologies
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High Strength Retaining Compound 

LOCTITE 638

Product category: Retaining Compounds

Data sheets

Product information

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.

Agency Approvals / Specifications: 

DVGW (EN 751-1): NG-5146AR0619,NSF P1 Reg No: 123010,WRAS (BS 6920): 0511518

Color:

Green

Gap Fill:

0.15 mm - 0.25 mm

Substrates:

Metal: Steel

Fixture Time:

4.0 min.

Viscosity:

2500.0 mPa·s (cP)

Shear Strength, Steel:

31.0 N/mm² (4500.0 psi)

Operating Temperature:

-55.0 °C - 180.0 °C (-65.0 °F - 355.0 °F)

Key Characteristics:

Fluorescent,Oil Tolerant,Strength: High Strength,Temperature Resistant,Viscosity: High Viscosity

Technology:

Acrylic

Applications:

For Close Fitting Cylindrical Parts,For Slip Fitted Parts,Retaining

Application Method:

Dispense System,Manual

Physical Form:

Liquid

Cure Type:

Anaerobic Cure

SIMILAR
PRODUCTS

  • Retaining Compounds

    LOCTITE 620 

  • Retaining Compounds

    LOCTITE 660 

RELATED
CASES

  • Performance secured cost-effectively

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