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Technical Data Sheet
120357 ✓ 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 INSERT,FLEXIBLE COUPLING is a the manufacturer industrial component. Key specifications include material: STEEL, special_features: LAMINATED CONSTRUCTION FEATURE-INCL.;BORE DIA 4.375 IN. IN, style_designator: MULTIPLE HOLES, ROUND BORE, overall_thickness: 0.281 INCHES NOMINAL IN, bolt_hole_diameter: 0.469 INCHES NOMINAL IN, bolt_circle_diameter: 5.562 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-829-7009, 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
120357
NSN: 5330-00-829-7009
FSC: 5330
CAGE: 83259 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV COMPOSITE SEALING SYSTEMS DIVISION (USA)
SPECIFICATIONS
materialSTEEL
special_featuresLAMINATED CONSTRUCTION FEATURE-INCL.;BORE DIA 4.375 IN. IN
style_designatorMULTIPLE HOLES, ROUND BORE
overall_thickness0.281 INCHES NOMINAL IN
bolt_hole_diameter0.469 INCHES NOMINAL IN
bolt_hole_quantity8
bolt_circle_diameter5.562 INCHES NOMINAL IN
overall_outside_diameter6.750 INCHES NOMINAL IN
NSN5330-00-829-7009
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 120357 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
OUTSIDE CORNER RADIUS: 0.380 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER: 4.000 INCHES NOMINAL IN
HOLE DIAMETER: 0.289 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
APERTURE DIAMETER: 2.750 INCHES NOMINAL IN
HARDNESS RATING: 60.0 SHORE DUROMETER A NOMINAL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE CORNER RADIUS0.380 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER4.000 INCHES NOMINAL IN
HOLE DIAMETER0.289 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL WIDTH3.600 INCHES NOMINAL IN
APERTURE DIAMETER2.750 INCHES NOMINAL IN
HARDNESS RATING60.0 SHORE DUROMETER A NOMINAL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
2769Interchangeable
interchangeable cross-reference
interchangeable
5034Interchangeable
interchangeable cross-reference
interchangeable
955309Interchangeable
interchangeable cross-reference
interchangeable
NAS1676C416Interchangeable
interchangeable cross-reference
interchangeable
MS35335-59Interchangeable
interchangeable cross-reference
interchangeable
1108-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 120357?
120357 is a INSERT,FLEXIBLE COUPLING.
What parts can replace 120357?
There are 14 known substitutes for 120357: 2769, 5034, 955309 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 120357?
120357 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-829-7009. This indicates validated use in U.S. government and defense supply chains.
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