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Technical Data Sheet
40210 ITEM NO 253 ✓ 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 SEAL,PLAIN is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, seal_width: 8.0 MILLIMETERS NOMINAL MM, outside_diameter: 42.0 MILLIMETERS NOMINAL MM, end_item_identification: STANCHI, MOTOR, accommodated_shaft_diameter: 25.0 MILLIMETERS NOMINAL MM, part_name_assigned_by_controlling_agency: SEAL, SHAFT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-640-9773, 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
40210 ITEM NO 253
NSN: 5330-01-640-9773
FSC: 5330
CAGE: 1KHV0 — EXLAR CORPORATION (USA)
SPECIFICATIONS
materialRUBBER OVERALL
seal_width8.0 MILLIMETERS NOMINAL MM
outside_diameter42.0 MILLIMETERS NOMINAL MM
end_item_identificationSTANCHI, MOTOR
accommodated_shaft_diameter25.0 MILLIMETERS NOMINAL MM
part_name_assigned_by_controlling_agencySEAL, SHAFT
NSN5330-01-640-9773
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 40210 ITEM NO 253 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
ACCOMMODATED SHAFT DIAMETER: 25.0 MILLIMETERS NOMINAL MM
SEAL WIDTH: 8.0 MILLIMETERS NOMINAL MM
OUTSIDE DIAMETER: 42.0 MILLIMETERS NOMINAL MM
MATERIAL: RUBBER OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONSTANCHI, MOTOR
ACCOMMODATED SHAFT DIAMETER25.0 MILLIMETERS NOMINAL MM
SEAL WIDTH8.0 MILLIMETERS NOMINAL MM
OUTSIDE DIAMETER42.0 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYSEAL, SHAFT
MATERIALRUBBER OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
11CS176ALT1PC24Interchangeable
interchangeable cross-reference
interchangeable
122230Interchangeable
interchangeable cross-reference
interchangeable
3237842Interchangeable
interchangeable cross-reference
interchangeable
58840DAXInterchangeable
interchangeable cross-reference
interchangeable
43294Interchangeable
interchangeable cross-reference
interchangeable
9729Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40210 ITEM NO 253?
40210 ITEM NO 253 is a SEAL,PLAIN.
What parts can replace 40210 ITEM NO 253?
There are 13 known substitutes for 40210 ITEM NO 253: 11CS176ALT1PC24, 122230, 3237842 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40210 ITEM NO 253?
40210 ITEM NO 253 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-640-9773. This indicates validated use in U.S. government and defense supply chains.
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