October 22, 2013
Henkel Corp. has announced enhancements to three Loctite® anaerobic retaining compounds to allow primerless performance on oily or contaminated surfaces at operating temperatures as high as 356 degrees F.
Loctite 638™ is a general-purpose retaining compound recommended for press fits that need subsequent disassembly. Designed for use on loose-fitting parts, the high-strength adhesive resists temperatures to 347 degrees F and can be used on applications with larger gaps approaching 0.009 in. The adhesive is registered to NSF Category P1.
Loctite 648™ is a high-strength retaining compound recommended for continuous working temperatures to 356 degrees F. This general-purpose retaining adhesive fixtures in 5 min., with full cure in 24 hours, and is designed for use on close-fitting parts. The high-strength formulation bonds to stainless steel press and interference fits and fills gaps to 0.006 in. The adhesive is certified to ANSI/NSF Standard 61 for use in potable water systems.
Loctite 680™ is a high-strength retaining adhesive for use on slip-fitted parts with gaps as large as 0.014 in. This low-viscosity material is certified to ANSI/NSF Standard 61 for use in potable water systems.
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