Less likely to torque out – Rivet nuts don't depend on a weld to stay in place.Unskilled labor can be trained in minutes to achieve a repeatable high-quality installation. ![]() Marc Drossaert is with Dejond Easy to install – Rivet nuts install in seconds with a hand tool (low volume) or a pneumatic power tool (high volume). The new designs feature connection options such as male or female threads, or a hose connection, offering zero-risk assembly solutions in HVAC and fluid control applications. New HX developments focus on their outstanding sealing properties rather than on fastening. It is the preferred solution for numerous applications such as in roof rack assemblies, battery packs or enclosure covers. This seal can be applied under the flat head of stocked standard parts, in all materials and shank shapes, offering OEM customers very short delivery times. Slight variations in seal thickness may influence head height and grip range, but a correctly installed Tubtara (H)DPX ensures an IP 67 waterproof assembly. The material offers a temperature resistance from -40☌ to 100☌ for continuous usage (150☌ peak temp), and is gap filling, forming a robust seal between mating surfaces. The polyurethane seal compound is resistant to many automotive oils, antifreeze and transmission fluids, and has a sealing capacity exceeding 150 bar. Therefore Dejond developed the (H)DPX series, involving a non-reactive peripheral seal, made of flexible, organic-based material, applied to the under-head bearing surface of a flat head Tubtara rivet nut. ![]() Originally designed to prevent leaks in a boot hinge assembly in a premium car make, the watertight HX Tubtara is a trusted solution in many other challenging applications too.Īs application requirements become increasingly complicated, other watertight rivet nut solutions had to be conceived. Standard O-ring seal material is NBR (Buna-N), but when a specific pressure, temperature resistance or chemical compatibility is required, other O-ring materials (Viton, EPDM, silicone, etc.) can be offered. The HX design is IP 68 guaranteed under Dejond test conditions, and is available in thread sizes M5 to M8. The under-head seal provides excellent protection against ingress of fluids, moisture, oil or dirt, even under high pressures up to at least 10 bar. This guarantees a well-functioning seal, ideally positioned away from possible burrs or sharp hole edges and protected against UV light. The hex-shaped shank prevents spin out, resisting a torque-to-turn force of at least 30Nm in M8.Īfter setting, the special head design ensures metal-to-metal contact on either side of the O-ring, that firmly remains in the conically shaped recess, resulting in an optimal seal compression. ![]() Designed with a closed end and a large flanged head with a cylindrical groove and O-ring seal mounted underneath, Dejond’s cold-formed HX blind rivet nuts in steel and stainless steel offer a worry-free, watertight fastening solution in many critical applications.ĭuring rivet nut installation an axial crimping action performed with a setting tool the O-ring seal slides into the groove and is compressed between the flanged head and the plate or profile the rivet nut is installed in.
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