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Technical Data Sheet
MS28773-02 ✓ 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 material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-PERIPHERAL RETAINER, peripheral_diameter: 0.468 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN, center_hole_diameter: 0.246 INCHES NOMINAL IN, cross-sectional_height: 0.055 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN, cross-sectional_shape_style: SQUARE/RECTANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-142-9940, 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
MS28773-02
NSN: 5330-01-142-9940
FSC: 5330
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL RETAINER
peripheral_diameter0.468 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
center_hole_diameter0.246 INCHES NOMINAL IN
cross-sectional_height0.055 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
material_document_and_classificationMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-142-9940
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28773-02 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
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPE: SCARF-PERIPHERAL RETAINER
PERIPHERAL DIAMETER: 0.468 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
CENTER HOLE DIAMETER: 0.246 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT: 0.055 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPESCARF-PERIPHERAL RETAINER
PERIPHERAL DIAMETER0.468 INCHES MINIMUM AND 0.472 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CENTER HOLE DIAMETER0.246 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.055 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
868879-2Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS9058Interchangeable
interchangeable cross-reference
interchangeable
MS9058-05Interchangeable
interchangeable cross-reference
interchangeable
MS28773Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28773-02?
MS28773-02 is a RETAINER,PACKING.
What parts can replace MS28773-02?
There are 4 known substitutes for MS28773-02: 868879-2, SAE-AS9058, MS9058-05 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28773-02?
MS28773-02 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-142-9940. This indicates validated use in U.S. government and defense supply chains.
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