Out of stock
SKU: LOC2301375
UPC: 079340012332
MPN: 2301375
Loctite 680 Bearing Mount Retaining Compound is a high-strength anaerobic adhesive engineered for securing cylindrical metal assemblies where slip-fit applications demand reliable retention. This bearing retaining compound cures when confined between close-fitting metal surfaces in the absence of air, creating a bond that prevents loosening and leakage caused by shock and vibration. Designed for mechanics, armorers, and industrial technicians, the 680 formula works on slightly oiled or contaminated surfaces without compromising bond integrity. We stock this professional-grade compound alongside our full selection of oils, fluids, and sealers for workshop and field applications.
The methacrylate ester formulation achieves 4,000 psi shear strength on steel substrates, making it suitable for demanding applications where mechanical retention alone falls short. Medium viscosity (750-1,750 mPa·s at 25°C) allows the compound to flow into microscopic surface irregularities while maintaining position during assembly. Cure time reaches handling strength in 10 minutes at room temperature, with the option to accelerate curing using a primer activator for faster production cycles. The single-component formula requires no mixing and provides leak-proof, corrosion-resistant joints that eliminate the need for set screws, clamp rings, or snap rings. This Loctite bearing retainer carries certification to the international standard for potable water systems not exceeding 82°C, expanding its utility beyond industrial environments.
Use Loctite 680 for mounting bearings into housings, securing bushings on shafts, and retaining cylindrical components subjected to rotational forces or axial loads. The oil-tolerant chemistry makes it practical for field repairs where complete degreasing isn't feasible. Store unopened containers between 8°C and 21°C for optimal shelf life. For complementary sealing solutions, browse our thread sealants and sleeve retainers to address additional assembly requirements in your shop.
Loctite 680 achieves 4,000 psi shear strength when bonding steel substrates. This high-strength rating makes it suitable for bearing mounts, bushing installations, and cylindrical assemblies that experience significant rotational forces, vibration, or axial loading during operation.
Yes, Loctite 680 is formulated to work on slightly oiled or contaminated metal surfaces. While clean surfaces produce optimal results, the oil-tolerant chemistry allows for effective bonding in field repair situations where complete degreasing may not be practical.
Loctite 680 reaches handling strength in approximately 10 minutes at room temperature. For faster production cycles, you can accelerate the cure time by using a compatible primer activator before applying the retaining compound to the assembly.
In many applications, Loctite 680 can replace or supplement mechanical retention methods like set screws, clamp rings, and snap rings. The anaerobic bond fills surface gaps and provides a leak-proof, corrosion-resistant joint that resists shock and vibration loosening.
Store Loctite 680 in unopened containers at temperatures between 8°C and 21°C for optimal shelf life. Keep the container sealed when not in use, as the anaerobic formula cures in the absence of air when confined between metal surfaces.
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