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RM146A389 ✓ 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, housing_bore_diameter: 4.003 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 2.875 INCHES NOMINAL 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 5330-00-291-1511, 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
RM146A389
NSN: 5330-00-291-1511
FSC: 5330
CAGE: 27996 — HEIL ENVIRONMENTAL INDUSTRIES (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
housing_bore_diameter4.003 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter2.875 INCHES NOMINAL IN
NSN5330-00-291-1511
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: RM146A389 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
•
MATERIAL: STEEL CASE
•
ACCOMMODATED SHAFT DIAMETER: 2.875 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 4.003 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CASE
ACCOMMODATED SHAFT DIAMETER2.875 INCHES NOMINAL IN
HOUSING BORE DIAMETER4.003 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
MATERIALLEATHER SEALING ELEMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
13228Interchangeable
interchangeable cross-reference
interchangeable
517-30Interchangeable
interchangeable cross-reference
interchangeable
394BInterchangeable
interchangeable cross-reference
interchangeable
49274Interchangeable
interchangeable cross-reference
interchangeable
D49274Interchangeable
interchangeable cross-reference
interchangeable
4002-28Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RM146A389?
RM146A389 is a SEAL,PLAIN ENCASED.
What parts can replace RM146A389?
There are 11 known substitutes for RM146A389: 13228, 517-30, 394B and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RM146A389?
RM146A389 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-1511. 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