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Technical Data Sheet
PartsTable / COMPONENT / 51939
51939 ✓ Verified by PartsTable
UNYKAch · 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 O-RING is a UNYKAch industrial component. Key specifications include material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR, center_hole_diameter: 15.262 INCHES MINIMUM AND 15.322 INCHES MAXIMUM IN, cross-sectional_height: 0.073 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6640-00-213-5606, 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
51939
NSN: 6640-00-213-5606
FSC: 6640
CAGE: 72419 — GENERAL SIGNAL CORP LINDBERG UNIT (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
center_hole_diameter15.262 INCHES MINIMUM AND 15.322 INCHES MAXIMUM IN
cross-sectional_height0.073 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN
NSN6640-00-213-5606
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: UNYKAch O-RING TITLE COMPONENT PN 51939 MFR UNYKAch O-RING
KEY FEATURES
•
HEAT SOURCE FOR WHICH DESIGNED: INTEGRAL
•
POWER RATING: 8500.0 WATTS MAXIMUM
•
INSIDE HEIGHT: 4.750 INCHES NOMINAL IN
•
VOLTAGE RATING: 230.0 VOLTS NOMINAL
•
INSULATED CABINET: PROVIDED
•
MATERIAL: STEEL CABINET INNER WALL
•
PHASE: SINGLE
TECHNICAL CHARACTERISTICS (FLIS)
HEAT SOURCE FOR WHICH DESIGNEDINTEGRAL
POWER RATING8500.0 WATTS MAXIMUM
INSIDE HEIGHT4.750 INCHES NOMINAL IN
VOLTAGE RATING230.0 VOLTS NOMINAL
INSULATED CABINETPROVIDED
SPECIAL FEATURESMAXIMUM TEMPERATURE 3000 DEG. F, CONTINUOUS 300 TO 2500 DEG F. DEGF
MATERIALSTEEL CABINET INNER WALL
PHASESINGLE
MATERIALSTEEL CABINET OUTER WALL
CABINET MOUNTING TYPESTAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
8708Interchangeable
interchangeable cross-reference
interchangeable
T-8708Interchangeable
interchangeable cross-reference
interchangeable
ABT8708Interchangeable
interchangeable cross-reference
interchangeable
RMC3Interchangeable
interchangeable cross-reference
interchangeable
6008Interchangeable
interchangeable cross-reference
interchangeable
9708Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51939?
51939 is a O-RING manufactured by UNYKAch.
What parts can replace 51939?
There are 12 known substitutes for 51939: 8708, T-8708, ABT8708 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51939?
51939 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6640-00-213-5606. 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