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Technical Data Sheet
PartsTable / COMPONENT / 612687
612687 ✓ Verified by PartsTable
— · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.750 INCHES NOMINAL SECOND END IN, seat_angle: 12.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL PIPE SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-194-7067, 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
612687
NSN: 5340-00-194-7067
FSC: 5340
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length0.750 INCHES NOMINAL SECOND END IN
seat_angle12.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_styleFLARELESS (TUBE) FIRST END
nominal_thread_size0.125 INCHES SECOND END IN
thread_series_designatorUNF FIRST END
furnished_items_and_quantity1 TUBE COUPLING NUT W/SLEEVE
nominal_outside_diameter_tube_accommodated0.250 INCHES FIRST END IN
tubing_wall_nominal_thickness_for_which_designed0.030 INCHES FIRST END IN
NSN5340-00-194-7067
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 612687 MFR: OEM ⚠ 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
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL: STEEL COMP 410
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5504 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE
SURFACE TREATMENTCADMIUM
MATERIALSTEEL COMP 410
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5504 ASSN STD SINGLE MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
612687Interchangeable
interchangeable cross-reference
interchangeable
269P-2Interchangeable
interchangeable cross-reference
interchangeable
10658261-2Interchangeable
interchangeable cross-reference
interchangeable
SM-A-949433-13Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 612687?
612687 is a PISTON,INTERNAL COMBUSTION ENGIN.
What parts can replace 612687?
There are 4 known substitutes for 612687: 612687, 269P-2, 10658261-2 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 612687?
612687 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-194-7067. 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