The Mares INT or yoke regulator AST tool is a specialised, high-precision workshop instrument engineered specifically for servicing Mares first-stage regulators equipped with international (INT/yoke) connections. This dedicated tool is designed to safely interact with Mares' proprietary Auto-Sealing Technology (AST)—an innovative anti-infiltration system that keeps water and contaminants out of the first stage when depressurised.
 
Because AST components are remarkably delicate, attempting to disassemble or reassemble them with standard workshop pliers or incorrect tools can easily lead to structural distortion or seal failures. Precision-machined entirely from premium-grade stainless steel, this tool ensures uniform alignment and thread engagement. It is an indispensable asset for commercial dive centres and professional scuba technicians who want to maintain factory-level assembly standards without compromising fragile regulator assemblies.
 
How It Works:
Opening/Disassembly: Position the tool squarely over the internal AST assembly within the yoke first-stage connection. For normal maintenance, use the integrated stainless steel T-handle to loosen it by hand. If dealing with a heavily corroded or seized system, the tool features an external hex profile that safely accommodates a 14mm open-ended spanner or socket wrench to break the initial thread friction.
Closing/Reassembly: Thread the serviced or replacement AST component back into position. Important: To prevent overtightening and catastrophic thread stripping or seal deformation, final tightening and closing must always be done exclusively by hand using the T-handle.
 
Key Features & Specifications:
Dedicated AST Maintenance: Engineered explicitly to safely open and close Mares anti-infiltration technology on international yoke first stages.
Premium Stainless Steel Construction: Precision-machined from high-grade stainless steel to ensure lifelong workshop durability and maximum corrosion resistance.
Dual-Drive Options: Features a comfortable built-in T-handle for manual control, alongside a 14mm external hex flat configuration for wrench assist on frozen parts.
O-Ring & Component Protection: Distributes forces evenly to safeguard delicate internal gaskets and moving valve pieces from damage.
 
Technical Details:
Manufacturer: Scuba Service Tools
SKU: 2000-SST-010
GTIN: 8720828266809
Mares Factory Part Compatibility: Used with Mares part number 46201507 (AST INT) on 82X, 62X, 15X, and R2 first-stage regulators.