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Technical Data Sheet
PartsTable / O-RING / 1820-38
1820-38 ✓ 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 PUMP,AXIAL PISTONS is a the manufacturer industrial component. Key specifications include drive_shaft_type: SPLINED, STRAIGHT INTERNAL, special_features: NO RELIEF VALVE; 0.500 PUMP CHARGE DISPLACEMENT, pumping_element_type: PISTON, pump_rotation_direction: CLOCKWISE, media_for_which_designed: HYDROCARBON FUELS AND OILS, reciprocating_stroke_type: VARIABLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-171-8248, 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
1820-38
NSN: 5331-00-171-8248
FSC: 5331 — O-RING
CAGE: 81168 — STROHMEYER, JULIE A. DBA JULIE A. STROHMEYER (USA)
SPECIFICATIONS
drive_shaft_typeSPLINED, STRAIGHT INTERNAL
special_featuresNO RELIEF VALVE; 0.500 PUMP CHARGE DISPLACEMENT
pumping_element_typePISTON
pump_rotation_directionCLOCKWISE
media_for_which_designedHYDROCARBON FUELS AND OILS
reciprocating_stroke_typeVARIABLE
NSN5331-00-171-8248
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1820-38 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 HEIGHT: 0.188 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.188 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
1F4622Interchangeable
interchangeable cross-reference
interchangeable
354080Interchangeable
interchangeable cross-reference
interchangeable
942532Interchangeable
interchangeable cross-reference
interchangeable
301003Interchangeable
interchangeable cross-reference
interchangeable
AGA3Interchangeable
interchangeable cross-reference
interchangeable
113-44Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1820-38?
1820-38 is a PUMP,AXIAL PISTONS.
What parts can replace 1820-38?
There are 30 known substitutes for 1820-38: 1F4622, 354080, 942532 and 27 more. Substitute compatibility should be verified for your specific system.
Is 1820-38 still available?
1820-38 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026