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Technical Data Sheet
1985A ✓ 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

ACTUATOR,HYDRAULIC-PNEUMATIC,ROT. Key specifications include end_item_identification: ACTUATOR HYD RTY 1985A A, criticality_code_justification: ZZZY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-448-0605, 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
1985A
NSN: 5340-00-448-0605
FSC: 5340
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
end_item_identificationACTUATOR HYD RTY 1985A A
criticality_code_justificationZZZY
NSN5340-00-448-0605
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1985A 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
MOUNTING HOLE QUANTITY: 1
MATERIAL: STEEL
PLATE THICKNESS: 0.035 INCHES NOMINAL IN
WIDTH: 0.750 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER: 0.406 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING HOLE QUANTITY1
MATERIALSTEEL
PLATE THICKNESS0.035 INCHES NOMINAL IN
WIDTH0.750 INCHES NOMINAL IN
MOUNTING HOLE DIAMETER0.406 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1985-41600Q5Interchangeable
interchangeable cross-reference
interchangeable
1985-41600Interchangeable
interchangeable cross-reference
interchangeable
1985AInterchangeable
interchangeable cross-reference
interchangeable
1985A0Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1985A?
1985A is a ACTUATOR,HYDRAULIC-PNEUMATIC,ROT.
What parts can replace 1985A?
There are 4 known substitutes for 1985A: 1985-41600Q5, 1985-41600, 1985A and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1985A?
1985A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-448-0605. This indicates validated use in U.S. government and defense supply chains.
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