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Technical Data Sheet
PartsTable / COMPONENT / MS28782-59
MS28782-59 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include angle: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM, material: PLASTIC TETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-BUTT RETAINER, peripheral_diameter: 5.849 INCHES MINIMUM AND 5.853 INCHES MAXIMUM IN, center_hole_diameter: 5.375 INCHES NOMINAL IN, distance_between_ends: 0.188 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-171-9224, 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
MS28782-59
NSN: 5330-00-171-9224
FSC: 5330
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
angle25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
materialPLASTIC TETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-BUTT RETAINER
peripheral_diameter5.849 INCHES MINIMUM AND 5.853 INCHES MAXIMUM IN
center_hole_diameter5.375 INCHES NOMINAL IN
distance_between_ends0.188 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
cross-sectional_height0.138 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
cross-sectional_thickness0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE
material_document_and_classificationMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-171-9224
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28782-59 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: 0.138 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
•
DISTANCE BETWEEN ENDS: 0.188 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC TETRAFLUOROETHYLENE OVERALL
•
CENTER HOLE DIAMETER: 5.375 INCHES NOMINAL IN
•
CROSS-SECTIONAL THICKNESS: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE
•
PERIPHERAL DIAMETER: 5.849 INCHES MINIMUM AND 5.853 INCHES MAXIMUM IN
•
ANGLE: 25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.138 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
DISTANCE BETWEEN ENDS0.188 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
MATERIALPLASTIC TETRAFLUOROETHYLENE OVERALL
CENTER HOLE DIAMETER5.375 INCHES NOMINAL IN
CROSS-SECTIONAL THICKNESS0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESQUARE
PERIPHERAL DIAMETER5.849 INCHES MINIMUM AND 5.853 INCHES MAXIMUM IN
ANGLE25.0 DEGREES MINIMUM AND 35.0 DEGREES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
JOINT TYPESCARF-BUTT RETAINER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
203186Interchangeable
interchangeable cross-reference
interchangeable
5162303Interchangeable
interchangeable cross-reference
interchangeable
B46-2Interchangeable
interchangeable cross-reference
interchangeable
MILB5687Interchangeable
interchangeable cross-reference
interchangeable
3159646-7Interchangeable
interchangeable cross-reference
interchangeable
44270-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28782-59?
MS28782-59 is a RETAINER,PACKING.
What parts can replace MS28782-59?
There are 11 known substitutes for MS28782-59: 203186, 5162303, B46-2 and 8 more. Substitute compatibility should be verified for your specific system.
Is MS28782-59 still available?
MS28782-59 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