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Technical Data Sheet

MS28774-018 — Technical Data Sheet

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· 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 BACKUP RING,AIRCRAF is a the manufacturer industrial component. Key specifications include cut_type: DIAGONAL OVERALL, material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-PERIPHERAL RETAINER, peripheral_diameter: 0.871 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN, center_hole_diameter: 0.767 INCHES MINIMUM AND 0.769 INCHES MAXIMUM IN, cross-sectional_height: 0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-839-1846, 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
MS28774-018
NSN: 5330-00-839-1846
FSC: 5330
CAGE: 99207 — GENERAL ELECTRIC COMPANY DBA GE AEROSPACE (USA)
SPECIFICATIONS
cut_typeDIAGONAL OVERALL
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL RETAINER
peripheral_diameter0.871 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
center_hole_diameter0.767 INCHES MINIMUM AND 0.769 INCHES MAXIMUM IN
cross-sectional_height0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
departure_from_cited_documentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
criticality_code_justificationZZZW
material_document_and_classificationSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5330-00-839-1846
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28774-018 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
JOINT TYPE: SCARF-PERIPHERAL RETAINER
CUT TYPE: DIAGONAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: PLASTIC TETRAFLUOROETHYLENE OVERALL
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
CENTER HOLE DIAMETER: 0.767 INCHES MINIMUM AND 0.769 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT: 0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
PERIPHERAL DIAMETER: 0.872 INCHES MINIMUM AND 0.876 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
JOINT TYPESCARF-PERIPHERAL RETAINER
CUT TYPEDIAGONAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC TETRAFLUOROETHYLENE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
CENTER HOLE DIAMETER0.767 INCHES MINIMUM AND 0.769 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
PERIPHERAL DIAMETER0.872 INCHES MINIMUM AND 0.876 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
2502774-18Interchangeable
interchangeable cross-reference
interchangeable
63750-100 ITEM 19CPInterchangeable
interchangeable cross-reference
interchangeable
63750-2 ITEM 19CPInterchangeable
interchangeable cross-reference
interchangeable
MS28774-018CPInterchangeable
interchangeable cross-reference
interchangeable
197576Interchangeable
interchangeable cross-reference
interchangeable
10087933Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28774-018?
MS28774-018 is a BACKUP RING,AIRCRAF.
What parts can replace MS28774-018?
There are 25 known substitutes for MS28774-018: 2502774-18, 63750-100 ITEM 19CP, 63750-2 ITEM 19CP and 22 more. Substitute compatibility should be verified for your specific system.
Is MS28774-018 still available?
MS28774-018 is currently cancelled.
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