LOCTITE® 638
Features and Benefits
Available sizes:
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.
- Ideal for shafts, gears, pulleys and similar cylindrical parts
- High strength on all metals, including passive substrates (e.g. stainless steel)
- High temperature resistance
- Fluorescent under UV for quality control
- Hydrogen gas approval for sealing threaded metal fittings according to KIWA GASTEC QA AR 214
- Tolerates minor contaminants, including industrial oils
- DVGW Approval (EN 751-1): NG-5146AR0619
Documents and Downloads
Safety Data Sheets and RoHs
- Bottle 10.0/case - IDH 1835925
- Bottle 10.0/case - IDH 1835936
- Bottle 10.0/case - IDH 1835937
LOCTITE® 638, 250 ml Bottle 1835925 en-CA
IDH:
1835925
EAN:
079340006409
Size Case: Bottle
Quantity: 10.0/case
LOCTITE® 638, 50 ml Bottle 1835936 en-CA
IDH:
1835936
EAN:
079340006393
Size Case: Bottle
Quantity: 10.0/case
LOCTITE® 638, 10 ml Bottle 1835937 en-CA
IDH:
1835937
EAN:
079340006386
Size Case: Bottle
Quantity: 10.0/case
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Technical Information
| Agency approvals / certificates / specifications | DVGW (EN 751-1): NG-5146AR0619, NSF P1 Reg. No 123010, WRAS (BS 6920): 0511518 |
| Application method | Dispense system, Manual |
| Applications | For close fitting cylindrical parts, For slip fitted parts, Retaining |
| Color | Green |
| Cure type | Anaerobic cure |
| Fixture time | 4.0 min. |
| Gap fill | 0.15 - 0.25 mm |
| Key characteristics | Fluorescent, Oil tolerant, Strength: high strength, Temperature resistant, Viscosity: high viscosity |
| Operating temperature | -55.0 - 180.0 °C (-65.0 - 355.0 °F ) |
| Physical form | Liquid |
| Recommended for use with | Metal: steel |
| Shear strength, Steel | 31.0 N/mm² (4500.0 psi ) |
| Viscosity | 2500.0 mPa·s (cP) |
LOCTITE® 638
LOCTITE 638 is a high strength, fast curing, general purpose retaining compound.