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. The
product cures when confined in the absence of air between close
fitting metal surfaces and prevents loosening and leakage from
shock and vibration. LOCTITE® 638™ provides robust curing
performance. It not only works on active metals (e.g. mild steel) but
also on passive substrates such as stainless steel and plated
surfaces. The product offers high temperature performance and oil
tolerance. It tolerates minor surface contaminations from various
oils, such as cutting, lubrication, anti-corrosion and protection fluids.
Typical applications include locking bushings and sleeves into
housings and on shafts.
Hydrogen Certified Adhesive
LOCTITE® 638™ has been tested and conforms to GASTEC QA
Approval requirement 214 (AR-214).
Note: This is a regional approval. Please contact your local
Technical Service Center for more information and clarification.
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