Engine-Safe Fastener Retainer for Lubrication Subassembly in High-Temperature, Fluid-Exposed Powertrain Environments

• A global automotive powertrain supplier required a fastener retaining solution for anchoring bolts on key lubrication components assembled inside fully built GM engines, an application environment that existing retaining products were not qualified to serve.

• The interior of a combustion engine presents continuous exposure to high operating temperatures and direct, sustained contact with motor fluids, conditions that caused existing retaining products to deteriorate and fail to maintain their retaining function, and pose risk to the engine lubrication system.

• Although comparable retaining products had been used successfully in other industrial applications, none could withstand the combined thermal and chemical demands of an internal engine environment, leaving a gap in available solutions for this class of application.

• High-Temperature Stability: Retain structural and adhesive integrity under the sustained elevated temperatures generated inside a running combustion engine.

• Motor Fluid Resistance: Resist degradation from continuous, direct contact with engine oils and other internal motor fluids throughout the service life of the assembly.

• Engine System Safety: Pose no risk of contamination, particulate release, or disruption to the engine's lubrication and circulation system.

• Subassembly Retention: Securely hold anchoring bolts to lubrication components during subassembly and transportation, ensuring components arrive at the assembly line ready for installation without additional preparation steps.

• Tectorius R&D developed Tec-Stay® 592 as the lead grade of the Tec-Stay® product line, formulated specifically to meet the thermal and chemical demands of the internal combustion engine environment. Its formulation properties prevent deterioration under continuous high-temperature and motor fluid exposure while posing no threat to the engine's lubrication and circulation system.

• Tec-Stay® 592 secures anchoring bolts to key components during subassembly and transportation, allowing assembled units to arrive at the production line ready for installation in a single step. This eliminates the need for fastener repositioning or preparation at the point of final assembly, improving line efficiency and reducing handling variation.

• The solution's performance in this application has driven broad adoption across the global automotive and commercial truck industries. Tec-Stay® is now used in gasoline and diesel engine programs by nearly all major OEMs worldwide, establishing it as the recognized standard for internal engine fastener retention in lubrication subassembly applications.