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The 16 mm BMW spot welding caps are precision-engineered consumables designed for use with the Car-O-Liner CTR9 resistance spot welder. These style caps form part of the equipment package officially approved by BMW AG for structural and body repair on BMW vehicles worldwide. Manufactured from C18150 bar stock.
Developed to meet the stringent performance standards set by BMW, the 16 mm cap profile ensures proper current distribution, consistent nugget formation, and repeatable OEM-quality welds across high-strength steel and mixed-material assemblies. Each cap is produced from high-conductivity copper alloy, maintaining durability and dimensional stability under demanding production or repair conditions.
The CTR9 system, together with its approved accessories, underwent extensive testing by BMW to verify compliance with factory welding specifications. The inclusion of the 16 mm cap design in this approval confirms its suitability for authorized collision repair networks and OEM-compliant body shops.
Key Features
OEM-approved 16 mm design for BMW applications
Compatible with Car-O-Liner CTR9 and related OEM-approved welders
High-conductivity copper alloy for consistent electrical and thermal performance
Precision-machined contact surface for uniform weld penetration
Ideal for certified and independent facilities performing BMW structural repairs
Alloy composition:
COPPER 99.03%
CHROMIUM .88%
ZIRCONIUM .082%
IRON .007%
BAR STOCK C18150
This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.
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