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PHREEGUARD 2255 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The COOLING WATER COMPOUND is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include physical_form: LIQUID, special_features: USED AS A CORROSION AND DEPOSIT CONTROL INHIBITOR FOR OPEN-RECIRCULATING COOLING SYSTEMS, active_ingredient: POTASSIUM HYDROXIDE, quantity_within_each_unit_package: 55.0 GALLONS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6850-01-256-7030, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
PHREEGUARD 2255
NSN: 6850-01-256-7030
FSC: 6850
CAGE: 4H642 — CALGON CORP SUB OF MERCK AND CO INC WATER MANAGEMENT DIV (USA)
SPECIFICATIONS
physical_formLIQUID
special_featuresUSED AS A CORROSION AND DEPOSIT CONTROL INHIBITOR FOR OPEN-RECIRCULATING COOLING SYSTEMS
active_ingredientPOTASSIUM HYDROXIDE
quantity_within_each_unit_package55.0 GALLONS
NSN6850-01-256-7030
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COOLING WATER COMPOUND TITLE COMPONENT PN PHREEGUARD 2255 MFR COOLING WATER COMPOUND
KEY FEATURES
•
QUANTITY WITHIN EACH UNIT PACKAGE: 55.0 GALLONS
•
ACTIVE INGREDIENT: POTASSIUM HYDROXIDE
•
PHYSICAL FORM: LIQUID
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESUSED AS A CORROSION AND DEPOSIT CONTROL INHIBITOR FOR OPEN-RECIRCULATING COOLING SYSTEMS
QUANTITY WITHIN EACH UNIT PACKAGE55.0 GALLONS
ACTIVE INGREDIENTPOTASSIUM HYDROXIDE
PHYSICAL FORMLIQUID
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
8367Interchangeable
interchangeable cross-reference
interchangeable
10PA3Interchangeable
interchangeable cross-reference
interchangeable
2295Interchangeable
interchangeable cross-reference
interchangeable
3891Interchangeable
interchangeable cross-reference
interchangeable
A-A-59282Interchangeable
interchangeable cross-reference
interchangeable
A3692Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PHREEGUARD 2255?
PHREEGUARD 2255 is a COOLING WATER COMPOUND.
What parts can replace PHREEGUARD 2255?
There are 18 known substitutes for PHREEGUARD 2255: 8367, 10PA3, 2295 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PHREEGUARD 2255?
PHREEGUARD 2255 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6850-01-256-7030. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026