STEINEL 034986 Seam Tester for Hot Air Welding Nozzles

On roofing and waterproofing sites, welders use the STEINEL 034986 Seam Tester to verify the integrity of hot-air welded seams on thermoplastic membranes such as PVC, TPO, and EPDM. The fine steel tip lifts the seam edge for close inspection, while the ergonomic plastic handle provides a secure grip during repeated quality checks.

Key specifications

• Product type: Seam tester
• Compatible with: Hot air welding equipment
• Probe material: High-grade steel
• Handle material: Robust plastic
• Handle design: Ergonomic
• Overall length: 180 mm
• Colour: Black handle, silver probe
• Application: Plastic welding seam inspection
• Function: Verifies integrity and quality of welded plastic seams
• Suitable for materials: Thermoplastic membranes (PVC, TPO, EPDM)
• Operating principle: Manual mechanical inspection
• Tool type: Hand tool
• Purpose: Quality control in plastic fabrication and roofing
• Durability: Designed for professional use
• Precision: Fine tip for accurate seam lifting

Why choose it

This seam tester is built for daily professional use, combining a hardened steel probe with a comfortable, non-slip handle. Its fine tip allows precise lifting of welded seams without damaging the membrane, making it an essential tool for quality assurance in plastic fabrication and roofing.

Ideal use cases

• Inspecting hot-air welds on flat roofing membranes
• Checking seam integrity in geomembrane installations
• Quality control during fabrication of PVC or TPO components
• On-site verification by welding technicians and inspectors

Good to know

The STEINEL 034986 is a manual inspection tool; it does not require power or calibration. For best results, use it immediately after welding while the seam is still warm and pliable.