Antminer S19XP+ Hydro Thermal Paste Stencil – Stainless Steel Hashboard Grease Tool

Antminer S19XP+ (Plus) Hydro Thermal Paste Stencil – Hashboard Grease Application Tool for Water Cooling Plate

This is a precision thermal paste stencil designed exclusively for the Antminer S19XP+ (Plus) Hydro miner. Built from high-hardness stainless steel with precision etching technology, the stencil aligns perfectly with the S19XP+ Hydro hashboard chip pattern and water-cooling plate footprint, so every ASIC chip receives an even, controlled bead of thermal grease. It is an essential bench tool for water cooling plate replacement and thermal grease re-application on S19XP+ Hydro rigs — the difference between a hashboard that runs cool and stable and one that drifts under thermal load.

Why a Dedicated Stencil for the S19XP+ Hydro

Manual grease application onto a hydro hashboard is the single most common cause of post-repair temperature spikes: too thick on one chip, too thin on the next, smears that bridge to neighbouring components. The S19XP+ Hydro stencil enforces a uniform thermal interface across the entire chip array in a single pass, producing a flat, repeatable joint between the ASIC tops and the water-cooling plate. The result: better heat transfer to the cooling loop, lower chip junction temperatures, and a hash rate that holds at spec instead of throttling under thermal stress.

Stainless Steel + Precision Etching

The stencil is etched from high-hardness stainless steel, not stamped — etching gives clean, burr-free apertures that release the gel cleanly when the stencil is lifted, without the residual smear stamping leaves behind. The stainless construction also resists corrosion from coolant residue and the isopropyl alcohol used during chip cleanup, and survives repeated wash cycles without warping. Properly stored, a single stencil handles a fleet's worth of hashboard refurbishments.

When to Use This Stencil

Two situations call for it on an S19XP+ Hydro: (1) replacing the water-cooling plate after a leak, gasket failure or coolant-line damage, and (2) refreshing the thermal interface when chip temperatures have crept up over months of duty cycling. Pump-out, dry-out and migration of the original grease are normal failure modes for hydro miners running 24/7, and a quick re-paste with a precision stencil typically restores the original temperature delta.

Application Workflow

Power off the miner and depressurise the cooling loop before disassembly. Strip the existing thermal compound from the hashboard chip tops and the water-cooling plate contact surface using isopropanol and a lint-free wipe. Position the stencil over the hashboard so the apertures align cleanly with the chip array, dispense your thermal grease across the surface, and pull cleanly with a flat scraper or squeegee. Lift the stencil straight up — do not slide — to leave even gel deposits on every chip. Lower the water-cooling plate straight down onto the chips and clamp at the recommended torque. Re-pressurise the loop, check for leaks, and only then re-energise.

Important Notes — Compatibility, Storage & TIM Choice

This stencil is compatible only with the Antminer S19XP+ (Plus) Hydro water-cooling block. It is not compatible with the air-cooled S19XP, the standard S19 Hydro, or any other miner model — the chip-pattern and water-plate footprint differ. For best results, pair the stencil with a high-conductivity thermal grease (≥6 W/m·K); an 8 W/mK silicone gel is the recommended class for this hashboard density. The stencil is a precision tool: avoid bending and sharp scratches in handling, store in a dry, dust-free environment between uses, and clean residual gel off after every session to keep aperture geometry sharp.

Antminer S19XP+ Hydro Thermal Paste Stencil Specifications

Related Antminer S19XP+ Hydro Parts & Thermal Tools

• APW11 PSU Water Cooling Plate – S21XP / S19XP Hydro
• BM1366AL Hashboard ASIC Chip – S19XP / S19XP Hydro
• DOWSIL TC-3080 8W/mK Blue Thermal Gel 1kg – Recommended TIM
• Antminer S21 Hydro Thermal Grease Fixture – Sister Tool

Refurbishing a fleet of S19XP+ Hydro miners? Contact us at contact@lys-sz.com for stencil sets and bulk thermal-grease pricing. Worldwide shipping from our Shenzhen warehouse.