Antminer S21Pro Thermal Paste Mold – Application Tool for Hashboard ASIC Chips

Antminer S21 Pro Thermal Paste Mold | 3-Piece Precision Grease Application Tool for Hashboard ASIC Chips

The Antminer S21 Pro thermal paste mold is a high-precision grease application tool for the S21 Pro hashboard ASIC chips. Ships as a 3-piece set (Left, Right, BOT) plus a scraper — covers the full hashboard footprint with the geometry needed for clean, even paste distribution. Designed for perfect alignment with the S21 Pro's specific ASIC chip layout.

Built from high-grade steel mesh for durability across many repeat applications. Even thermal paste distribution prevents the localised hotspots that come from inconsistent manual paste application, which directly translates into longer chip lifespan, lower thermal throttle, and better hashrate stability over time.

When to Use the S21 Pro Thermal Paste Mold

• Routine thermal grease refresh on aging S21 Pro units suffering thermal throttle after years of duty.
• Post-chip-replacement reassembly — fresh grease layer over the entire hashboard before reseating the heat sink.
• Heat-sink upgrade or swap — clean paste layer needed when fitting a new heat sink to an existing hashboard.
• Repair-bench volume work — repeatable paste application across dozens of S21 Pro boards per shift.
• Chip lifespan extension on production fleets — fresh paste every 12-18 months keeps thermal performance close to factory spec.

Antminer S21 Pro Thermal Paste Mold Specifications

FAQ — S21 Pro Thermal Paste Mold

Q: Why a 3-piece set vs single stencil?
A: The S21 Pro hashboard has three distinct ASIC-chip zones (Left, Right, Bottom) with different aperture patterns. A single stencil would either miss areas or apply paste where it shouldn't. The 3-piece set covers each zone with its dedicated aperture geometry — clean uniform coverage across the full board.

Q: Does the mold work on standard S21 / S21+ / S21XP?
A: No — S21 Pro specifically. Other S21 variants have different hashboard component layouts and need their own mold. Match the suffix exactly.

Q: What thermal paste should I use with this mold?
A: 8W/mK or higher conductivity grease rated for continuous mining duty. Lower grades lose performance after a few months of 24/7 operation. We stock several compatible thermal greases for ASIC mining.

Q: Bulk pricing for repair benches?
A: Yes — email contact@lys-sz.com for volume pricing on S21 Pro thermal paste molds plus matched grease kits.

Related products

• Antminer S21 8W G19 Blue Thermal Gel 30CC
• DOWSIL 8W/mK Blue Thermal Gel 1kg
• Whatsminer KL1040 White Thermal Grease 1kg
• Antminer S21 Hydro Thermal Grease Fixture

Repair benches stocking S21 Pro thermal paste molds plus matched grease kits? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouse.