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Technical Data Sheet
PartsTable / COMPONENT / 5R15-12
5R15-12 ✓ 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, special_features: JOINT TYPE: SCARF-PERIPHERAL RETAINER, peripheral_diameter: 1.279 INCHES NOMINAL IN, center_hole_diameter: 0.941 INCHES NOMINAL IN, cross-sectional_height: 0.073 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-527-9107, 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
5R15-12
NSN: 5330-00-527-9107
FSC: 5330
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialPLASTIC
special_featuresJOINT TYPE: SCARF-PERIPHERAL RETAINER
peripheral_diameter1.279 INCHES NOMINAL IN
center_hole_diameter0.941 INCHES NOMINAL IN
cross-sectional_height0.073 INCHES NOMINAL IN
NSN5330-00-527-9107
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5R15-12 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
•
CENTER HOLE DIAMETER: 0.941 INCHES NOMINAL IN
•
PERIPHERAL DIAMETER: 1.279 INCHES NOMINAL IN
•
CROSS-SECTIONAL HEIGHT: 0.073 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC
CENTER HOLE DIAMETER0.941 INCHES NOMINAL IN
SPECIAL FEATURESJOINT TYPE: SCARF-PERIPHERAL RETAINER
PERIPHERAL DIAMETER1.279 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.073 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
MS9058-10Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS9058Interchangeable
interchangeable cross-reference
interchangeable
MS9058-32Interchangeable
interchangeable cross-reference
interchangeable
868879-2Interchangeable
interchangeable cross-reference
interchangeable
MS9058-05Interchangeable
interchangeable cross-reference
interchangeable
5R15-16Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5R15-12?
5R15-12 is a BACK-UP RING,PREFORMED PACKING.
What parts can replace 5R15-12?
There are 22 known substitutes for 5R15-12: MS9058-10, SAE-AS9058, MS9058-32 and 19 more. Substitute compatibility should be verified for your specific system.
Is 5R15-12 still available?
5R15-12 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