Brass Vibra-Lok Elbow Tee

A Brass Vibra-Lok Elbow Tee is a three-way directional brass connector designed with an integrated 90-degree elbow trajectory and an additional auxiliary port (either tube compression or pipe thread). This allows fluid power engineers to negotiate sharp equipment corners while establishing an auxiliary branch tapping in a single compact fitting body. Both tube ports incorporate proprietary elastomeric cushioning sleeves that isolate incoming tubing from dynamic mechanical harmonics.

In conventional 90-degree fittings, dynamic machine vibration generates intense cyclical bending moments at the fitting socket. Rigid metal ferrules or flared tube necks concentrate this stress until the metal work-hardens and shears. The Vibra-Lok elastomeric sleeve provides a resilient 360-degree cushion that allows the tubing to flex up to 4 degrees angularly and axially without metal-to-metal gouging, dissipating up to 90% of dynamic vibrational energy.

Pioneer Industries manufactures Vibra-Lok sleeves in two primary compounds: Standard Buna-N (Nitrile) for petroleum fuels, hydraulic oils, air, and water from -35°C to +100°C (-30°F to +212°F); and High-Temperature Fluorocarbon (Viton / FKM) for synthetic lubricants, aggressive chemicals, and elevated thermal environments from -26°C to +204°C (-15°F to +400°F).

Working pressures reach up to 2,000 PSI (138 bar) in sizes from 1/8″ to 1/4″ OD, 1,500 PSI (103 bar) for 5/16″ and 3/8″ OD, and up to 1,000 PSI (70 bar) in 1/2″ OD, backed by an ASME B31.3 compliant 4:1 hydrostatic burst safety factor. In vacuum lines, the continuous circumferential elastomeric seal reliably holds vacuum down to 29.5 in. Hg.

No. The Vibra-Lok Elbow Tee is 100% flareless. Installation requires only square-cutting and deburring the tube end, sliding the nut and elastomeric sleeve onto the tube, inserting the tube into the fitting until it bottoms out, and tightening the nut finger-tight plus exactly one full turn (360°) with an open-end wrench.

Because the sealing element is a compliant elastomer rather than rigid metal, the sleeve conforms under compression to minor tube out-of-roundness, longitudinal tooling scratches, and angular misalignments up to 4 degrees. This eliminates leaks caused by slight surface abrasions that typically defeat rigid compression ferrules.

Yes. Because the elastomeric sleeve does not swage, cut, or crimp a permanent groove into the tubing wall, the tubing remains perfectly round and reusable. Disassembly simply requires loosening the nut. If the elastomer becomes aged or heat-hardened after years of service, inexpensive replacement sleeves restore the joint to factory-fresh sealing integrity.

The fitting is fully compatible with soft copper, half-hard drawn copper, seamless aluminum, brass, thin-wall hydraulic steel, and even lab-grade glass tubing. When utilizing thermoplastic tubing like Nylon or Polyethylene, brass tube support inserts should be inserted into the tube bore to prevent wall collapse.

Tighten the nut finger-tight until the sleeve seats, then rotate with a wrench exactly one full turn (360°). Overtightening beyond 1-1/2 turns over-compresses the sleeve into the internal tube passage, potentially restricting flow and reducing sleeve elasticity. Torque wrenches or simple visual flats counting ensure perfect makeup.

All bodies are hot-forged from BS 218 / CW617N (ASTM B124 C37700) brass to eliminate porosity and stress crack susceptibility. Consignments undergo 100% pneumatic bubble testing at 10 bar, thread pitch optical inspection, and are delivered with authentic EN 10204 Type 3.1 Mill Test Certificates verifying complete melt heat traceability.