The Morelli Telescopic Tube — .055″ is a stainless steel sleeve with a .055″ (1,40 mm) internal diameter, the widest bore in the Morelli telescopic line. Its clearance accepts heavy round wires and stems up to 1,40 mm, making it the tube of choice for orthopedic and orthodontic appliances whose sliding mechanism runs on reinforced stock — including Mandibular Protraction Appliances (MPA) for Class II correction.
Key Features
Widest bore of the three gauges — the .055″ (1,40 mm) internal diameter accepts heavy round wires and stems up to 1,40 mm
Extra clearance by design — generous tolerance keeps travel free even in appliances loaded off-axis
Stainless steel construction — resists flaring and deformation under the higher forces carried by heavy-gauge assemblies
330 mm continuous length — cut to length for long telescoping arms without splicing
Suited to outer-sleeve roles — the largest section in a multi-stage telescoping assembly
Reinforced appliance work — for orthopedic devices where light-gauge tubing would be undersized
Technical Specifications
Material: Stainless Steel
Internal Diameter: .055″ (Ø 1,40 mm)
Wire Compatibility: Round wires and stems up to .055″ (1,40 mm)
Length: 330 mm per tube
Purpose: Sliding sleeve for telescoping mechanisms in heavy-gauge orthopedic and orthodontic appliances
Certifications: FDA Approved, CE Approved, ISO 9001:2015, ISO 13485:2016
Country of Manufacture: Brazil
Package Includes: 5 telescopic tubes, .055″ (1,40 mm) internal diameter, 330 mm each
Clinical Applications
Reinforced Mandibular Protraction Appliances (MPA) — telescoping arms running on heavy rods up to 1,40 mm
Orthopedic appliances under high load — sliding sections that must carry protraction or expansion forces
Laboratory fabrication — outer sleeves and guides in multi-stage telescoping assemblies
Need the widest bore available?
The .055″ tube handles the heaviest stock in the family — step down to the .035″ (0,90 mm) tube for standard framework wire or the .031″ (0,80 mm) tube for light 0,8 mm stems.
