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PartsTable / COMPONENT / MS9058-10
MS9058-10 ✓ 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, special_features: JOINT TYPE: SCARF-PERIPHERAL RETAINER, peripheral_diameter: 1.031 INCHES NOMINAL IN, center_hole_diameter: 0.769 INCHES NOMINAL IN, cross-sectional_height: 0.073 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-329-9668, 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
MS9058-10
NSN: 5330-00-329-9668
FSC: 5330
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE
special_featuresJOINT TYPE: SCARF-PERIPHERAL RETAINER
peripheral_diameter1.031 INCHES NOMINAL IN
center_hole_diameter0.769 INCHES NOMINAL IN
cross-sectional_height0.073 INCHES NOMINAL IN
NSN5330-00-329-9668
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MS9058-10 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
•
CROSS-SECTIONAL HEIGHT: 0.073 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 1.031 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.769 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE
SPECIAL FEATURESJOINT TYPE: SCARF-PERIPHERAL RETAINER
CROSS-SECTIONAL HEIGHT0.073 INCHES NOMINAL IN
PERIPHERAL DIAMETER1.031 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.769 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
MS9058-32Interchangeable
interchangeable cross-reference
interchangeable
868879-2Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS9058Interchangeable
interchangeable cross-reference
interchangeable
MS9058-05Interchangeable
interchangeable cross-reference
interchangeable
5R15-16Interchangeable
interchangeable cross-reference
interchangeable
SR2619-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS9058-10?
MS9058-10 is a BACK-UP RING,PREFORMED PACKING.
What parts can replace MS9058-10?
There are 24 known substitutes for MS9058-10: MS9058-32, 868879-2, SAE-AS9058 and 21 more. Substitute compatibility should be verified for your specific system.
Is MS9058-10 still available?
MS9058-10 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