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Technical Data Sheet
10939 ✓ Verified by PartsTable
Trefl · 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

The DISK,CLUTCH,NONVEHICULAR is a Trefl industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR OVERALL, outside_diameter: 0.675 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN, style_designator: CIRCULAR, aperture_diameter: 0.468 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN, cross-sectional_thickness: 0.032 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-003-1074, 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 10939
NSN: 5330-00-003-1074
FSC: 5330
CAGE: 12522 — STACO SYSTEMS, INC. DBA STACO SYSTEMS DIV DBA STACO SYSTEMS (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR OVERALL
outside_diameter0.675 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN
style_designatorCIRCULAR
aperture_diameter0.468 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
cross-sectional_thickness0.032 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN5330-00-003-1074
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 10939 MFR: Trefl ⚠ 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: 0.032 INCHES NOMINAL IN
OUTSIDE DIAMETER: 0.675 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
STYLE DESIGNATOR: CIRCULAR
MATERIAL: RUBBER CHLOROPRENE CLASS CR OVERALL
APERTURE DIAMETER: 0.468 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL THICKNESS0.032 INCHES NOMINAL IN
OUTSIDE DIAMETER0.675 INCHES MINIMUM AND 0.725 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
STYLE DESIGNATORCIRCULAR
MATERIALRUBBER CHLOROPRENE CLASS CR OVERALL
APERTURE DIAMETER0.468 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
5005Interchangeable
interchangeable cross-reference
interchangeable
G26853Interchangeable
interchangeable cross-reference
interchangeable
17045-3Interchangeable
interchangeable cross-reference
interchangeable
10939Interchangeable
interchangeable cross-reference
interchangeable
CD508Interchangeable
interchangeable cross-reference
interchangeable
CP130Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10939?
10939 is a DISK,CLUTCH,NONVEHICULAR manufactured by Trefl. It is classified as a MRO (MRO_GENERAL).
What parts can replace 10939?
There are 20 known substitutes for 10939: 5005, G26853, 17045-3 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10939?
10939 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-003-1074. This indicates validated use in U.S. government and defense supply chains.
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