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PartsTable / COMPONENT / MS28774-222
MS28774-222 ✓ 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 cut_type: DIAGONAL OVERALL, material: PLASTIC TETRAFLUOROETHYLENE OVERALL, peripheral_diameter: 1.758 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN, center_hole_diameter: 1.521 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN, cross-sectional_height: 0.045 INCHES MINIMUM AND 0.052 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 5330-00-332-3445, 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
MS28774-222
NSN: 5330-00-332-3445
FSC: 5330
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
cut_typeDIAGONAL OVERALL
materialPLASTIC TETRAFLUOROETHYLENE OVERALL
peripheral_diameter1.758 INCHES MINIMUM AND 1.762 INCHES MAXIMUM IN
center_hole_diameter1.521 INCHES MINIMUM AND 1.523 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
NSN5330-00-332-3445
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28774-222 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 SHAPE STYLE: SQUARE/RECTANGULAR
•
JOINT TYPE: SCARF-PERIPHERAL RETAINER
•
PERIPHERAL DIAMETER: 1.757 INCHES MINIMUM AND 1.763 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
CUT TYPE: DIAGONAL OVERALL
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
•
CRITICALITY CODE JUSTIFICATION: ZZZY
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
JOINT TYPESCARF-PERIPHERAL RETAINER
PERIPHERAL DIAMETER1.757 INCHES MINIMUM AND 1.763 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
CUT TYPEDIAGONAL OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
CRITICALITY CODE JUSTIFICATIONZZZY
CENTER HOLE DIAMETER1.521 INCHES MINIMUM AND 1.523 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.045 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
SAE-AS8791Interchangeable
interchangeable cross-reference
interchangeable
011222ELInterchangeable
interchangeable cross-reference
interchangeable
982199Interchangeable
interchangeable cross-reference
interchangeable
235716-0001ITEM10Interchangeable
interchangeable cross-reference
interchangeable
C8384ITEM11Interchangeable
interchangeable cross-reference
interchangeable
C-7771ITEM11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS28774-222?
MS28774-222 is a RETAINER,PACKING.
What parts can replace MS28774-222?
There are 32 known substitutes for MS28774-222: SAE-AS8791, 011222EL, 982199 and 29 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS28774-222?
MS28774-222 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-332-3445. 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