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Technical Data Sheet
PartsTable / O-RING / G771
G771 ✓ 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

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, body_width: 3.375 INCHES NOMINAL IN, body_height: 5.250 INCHES NOMINAL IN, body_length: 3.937 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 1.875 INCHES NOMINAL 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 5331-00-139-7418, 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
G771
NSN: 5331-00-139-7418
FSC: 5331 — O-RING
CAGE: 59505 — NEWPORT SCIENTIFIC, INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
body_width3.375 INCHES NOMINAL IN
body_height5.250 INCHES NOMINAL IN
body_length3.937 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_height1.875 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES OVERALL
first_end_styleOVAL
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
outside_diameter2.625 INCHES NOMINAL IN
style_designatorOUTSIDE CAM TYPE
NSN5331-00-139-7418
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: G771 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
•
CROSS-SECTIONAL HEIGHT: 0.197 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.197 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
G77-1Interchangeable
interchangeable cross-reference
interchangeable
C2-1Interchangeable
interchangeable cross-reference
interchangeable
120614-001Interchangeable
interchangeable cross-reference
interchangeable
11263809Interchangeable
interchangeable cross-reference
interchangeable
30060Interchangeable
interchangeable cross-reference
interchangeable
H-95Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G771?
G771 is a TRANSFORMER,POWER.
What parts can replace G771?
There are 9 known substitutes for G771: G77-1, C2-1, 120614-001 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G771?
G771 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-139-7418. 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