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Technical Data Sheet
PartsTable / COMPONENT / MS28776M2-31
MS28776M2-31 ✓ 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 RING,WIPER is a the manufacturer industrial component. Key specifications include ring_style: CONCENTRIC, joint_style: DIAGONAL JOINT, inside_diameter: 3.250 INCHES NOMINAL IN, outside_diameter: 3.594 INCHES NOMINAL IN, material_thickness: 0.140 INCHES NOMINAL IN, fsc_application_data: HYDRAULIC SYSTEM,ACFT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-294-1391, 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
MS28776M2-31
NSN: 5330-00-294-1391
FSC: 5330
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
ring_styleCONCENTRIC
joint_styleDIAGONAL JOINT
inside_diameter3.250 INCHES NOMINAL IN
outside_diameter3.594 INCHES NOMINAL IN
material_thickness0.140 INCHES NOMINAL IN
fsc_application_dataHYDRAULIC SYSTEM,ACFT
outer_edge_thickness0.109 INCHES NOMINAL IN
cross-sectional_shape_styleOUTSIDE GROOVED, STRAIGHT FACE
NSN5330-00-294-1391
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28776M2-31 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
•
INSIDE DIAMETER: 3.250 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: OUTSIDE GROOVED, STRAIGHT FACE
•
FSC APPLICATION DATA: HYDRAULIC SYSTEM,ACFT
•
JOINT STYLE: DIAGONAL JOINT
•
TEST DATA DOCUMENT: 81349-MIL-S-5049 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
•
MATERIAL THICKNESS: 0.140 INCHES NOMINAL IN
•
RING STYLE: CONCENTRIC
•
OUTER EDGE THICKNESS: 0.109 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
INSIDE DIAMETER3.250 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEOUTSIDE GROOVED, STRAIGHT FACE
FSC APPLICATION DATAHYDRAULIC SYSTEM,ACFT
JOINT STYLEDIAGONAL JOINT
TEST DATA DOCUMENT81349-MIL-S-5049 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MATERIAL THICKNESS0.140 INCHES NOMINAL IN
RING STYLECONCENTRIC
OUTER EDGE THICKNESS0.109 INCHES NOMINAL IN
OUTSIDE DIAMETER3.594 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
G3-1AInterchangeable
interchangeable cross-reference
interchangeable
G3-1Interchangeable
interchangeable cross-reference
interchangeable
MILB83769Interchangeable
interchangeable cross-reference
interchangeable
M83769/3-1Interchangeable
interchangeable cross-reference
interchangeable
292-4942G1Interchangeable
interchangeable cross-reference
interchangeable
C6DZ-9030-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28776M2-31?
MS28776M2-31 is a RING,WIPER.
What parts can replace MS28776M2-31?
There are 18 known substitutes for MS28776M2-31: G3-1A, G3-1, MILB83769 and 15 more. Substitute compatibility should be verified for your specific system.
Is MS28776M2-31 still available?
MS28776M2-31 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026