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ER3439 ✓ 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 ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.234 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN, outside_diameter: 1.601 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 1.595 INCHES MINIMUM AND 1.602 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-812-6435, 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
ER3439
NSN: 5330-00-812-6435
FSC: 5330
CAGE: 79150 — DANA AUTOMOTIVE SYSTEMS GROUP, LLC DBA DANA SEALING PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.234 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
outside_diameter1.601 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter1.595 INCHES MINIMUM AND 1.602 INCHES MAXIMUM IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter0.947 INCHES MINIMUM AND 0.984 INCHES MAXIMUM IN
NSN5330-00-812-6435
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ER3439 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: 0.947 INCHES MINIMUM AND 0.984 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 1.595 INCHES MINIMUM AND 1.602 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: VERTICAL
•
SURFACE TREATMENT: PLASTIC CASE
•
MATERIAL: STEEL CASE
•
CASE STYLE: SQUARE
•
SEAL WIDTH: 0.234 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER0.947 INCHES MINIMUM AND 0.984 INCHES MAXIMUM IN
HOUSING BORE DIAMETER1.595 INCHES MINIMUM AND 1.602 INCHES MAXIMUM IN
SEALING ELEMENT STYLEVERTICAL
SURFACE TREATMENTPLASTIC CASE
MATERIALSTEEL CASE
CASE STYLESQUARE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SEAL WIDTH0.234 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.601 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
626-102Interchangeable
interchangeable cross-reference
interchangeable
1257-09700Interchangeable
interchangeable cross-reference
interchangeable
9700-0-150VACInterchangeable
interchangeable cross-reference
interchangeable
9700Interchangeable
interchangeable cross-reference
interchangeable
2032-5006-00Interchangeable
interchangeable cross-reference
interchangeable
990258-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ER3439?
ER3439 is a SEAL,PLAIN ENCASED.
What parts can replace ER3439?
There are 22 known substitutes for ER3439: 626-102, 1257-09700, 9700-0-150VAC and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ER3439?
ER3439 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-812-6435. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026