PartsTable
Technical Data Sheet
0-521-23 ✓ Verified by PartsTable
· MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include material: RUBBER SYNTHETIC OVERALL, hardness_rating: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL, outside_diameter: 0.594 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.109 INCHES NOMINAL IN, fsc_application_data: REGULATOR,OXYGEN,DILUTER DEMAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-099-6757, 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
MRO MRO_GENERAL 0-521-23
NSN: 5330-00-099-6757
FSC: 5330
CAGE: 03990 — INGERSOLL-RAND COMPANY DBA INGERSOLL-RAND (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
hardness_rating65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
outside_diameter0.594 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.109 INCHES NOMINAL IN
fsc_application_dataREGULATOR,OXYGEN,DILUTER DEMAND
cross-sectional_thickness0.062 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-099-6757
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 0-521-23 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 THICKNESS: 0.062 INCHES NOMINAL IN
OUTSIDE DIAMETER: 0.594 INCHES NOMINAL IN
APERTURE DIAMETER: 0.109 INCHES NOMINAL IN
STYLE DESIGNATOR: CIRCULAR
FSC APPLICATION DATA: REGULATOR,OXYGEN,DILUTER DEMAND
MATERIAL: RUBBER SYNTHETIC OVERALL
HARDNESS RATING: 65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
OUTSIDE DIAMETER0.594 INCHES NOMINAL IN
APERTURE DIAMETER0.109 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
FSC APPLICATION DATAREGULATOR,OXYGEN,DILUTER DEMAND
MATERIALRUBBER SYNTHETIC OVERALL
HARDNESS RATING65.0 SHORE DUROMETER A MINIMUM AND 75.0 SHORE DUROMETER A MAXIMUM OVERALL
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
4WE6Interchangeable
interchangeable cross-reference
interchangeable
2264248Interchangeable
interchangeable cross-reference
interchangeable
968-0102Interchangeable
interchangeable cross-reference
interchangeable
968Interchangeable
interchangeable cross-reference
interchangeable
DR12Interchangeable
interchangeable cross-reference
interchangeable
8840Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0-521-23?
0-521-23 is a RESISTOR,VARIABLE,NONWIRE WOUND,. It is classified as a MRO (MRO_GENERAL).
What parts can replace 0-521-23?
There are 15 known substitutes for 0-521-23: 4WE6, 2264248, 968-0102 and 12 more. Substitute compatibility should be verified for your specific system.
Is 0-521-23 still available?
0-521-23 is currently cancelled.
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