PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MS28773
MS28773 ✓ 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 BACK-UP RING,PREFORMED 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 part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-515-3432, 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
NSN: 5330-00-515-3432
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
NSN5330-00-515-3432
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS28773 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
•
PERIPHERAL DIAMETER: 0.657 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.061 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.423 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
PERIPHERAL DIAMETER0.657 INCHES NOMINAL IN
SPECIAL FEATURESJOINT TYPE: SCARF-PERIPHERAL RETAINER
CROSS-SECTIONAL HEIGHT0.061 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.423 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
MS9058-10Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS9058Interchangeable
interchangeable cross-reference
interchangeable
MS9058-32Interchangeable
interchangeable cross-reference
interchangeable
1005-501-3583Interchangeable
interchangeable cross-reference
interchangeable
307689Interchangeable
interchangeable cross-reference
interchangeable
5365005013583Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy MS28773?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MS28773?
MS28773 is a BACK-UP RING,PREFORMED PACKING.
What parts can replace MS28773?
There are 24 known substitutes for MS28773: MS9058-10, SAE-AS9058, MS9058-32 and 21 more. Substitute compatibility should be verified for your specific system.
Is MS28773 still available?
MS28773 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MS28773

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026