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Technical Data Sheet
31239 ✓ Verified by PartsTable
InLine · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

25-pin Sub D plug to 9-pin Sub D socket. Key specifications include material: PLASTIC ACETAL OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, case_style: SQUARE, seal_width: 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN, shell_type: SOLID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-355-9879, 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
31239
NSN: 5340-00-355-9879
FSC: 5340
CAGE: 56394 — PAX MFG CORP HAMMARLUND MFG CO DIV (USA)
SPECIFICATIONS
materialPLASTIC ACETAL OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
case_styleSQUARE
seal_width0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM IN
shell_typeSOLID
tooth_formSTANDARD
temp_rating-65.0 FAHRENHEIT AND 225.0 FAHRENHEIT DEGF
thread_class2A A
terminal_typeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
overall_length1.300 INCHES NOMINAL IN
pitch_diameter0.5625 INCHES NOMINAL IN
NSN5340-00-355-9879
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 31239 MFR: InLine ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
31239Upgraded Successor
successor cross-reference
successor
266675R91Interchangeable
interchangeable cross-reference
interchangeable
273986R91Interchangeable
interchangeable cross-reference
interchangeable
22BNC-50-0-3Interchangeable
interchangeable cross-reference
interchangeable
276MR138P001Interchangeable
interchangeable cross-reference
interchangeable
3391-0001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 31239?
31239 is a CONNECTOR,RECEPTACLE,ELECTRICAL manufactured by InLine.
What parts can replace 31239?
There are 7 known substitutes for 31239: 31239, 266675R91, 273986R91 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31239?
31239 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-355-9879. This indicates validated use in U.S. government and defense supply chains.
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