LOCTITE 638
Features and Benefits
Available in:
-
250.0 ml bottle
10/case
-
50.0 ml bottle
10/case
-
10.0 ml bottle
10/case
Retaining Compound - high strength. General purpose. Fast curing.
LOCTITE® 638 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 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.
- High temperature resistance
- Tolerates minor contaminants, including industrial oils
- High strength on all metals, including passive substrates (e.g. stainless steel)
- Ideal for shafts, gears, pulleys and similar cylindrical parts
- P1 NSF Reg. No.: 123010
- DVGW Approval (EN 751-1): NG-5146AR0619
- WRAS Approval (BS 6920): 0511518
Documents and Downloads
Technical
Data Sheet
Loctite 638
Download TDS
Safety
Data Sheets
and RoHs
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Technical Information
| Agency Approvals / Specifications | DVGW (EN 751-1): NG-5146AR0619, NSF P1 Reg No: 123010, WRAS (BS 6920): 0511518 |
| Color | Green |
| Diametrical Clearance (Maximum) | 0.25 mm |
| Fixture Time | 4 min. |
| Fixture Time Temperature | 39 °F |
| Full Cure Temperature | 77 °F |
| Gap Fill | 0.01 in. |
| Shear Strength Unit, Steel | psi |
| Shear Strength, Steel | 4500 |
| Specific Gravity | 1.09 g/l |
| Specific Gravity Temperature | 25 °C |
| Substrates | Metal: Steel |
| Temperature | -65 - 300 °F |
| Viscosity | 2500 mPa.s (cP) Brookfield |
| Viscosity Temperature | 77 °F |