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Technical Data Sheet
12358784-1 ✓ 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: 0.418 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, surface_treatment: PHOSPHATE MANGANESE OR PHOSPHATE ZINC CASE, housing_bore_diameter: 5.254 INCHES MINIMUM AND 5.259 INCHES MAXIMUM IN, sealing_element_style: VERTICAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-326-7598, 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
12358784-1
NSN: 5330-01-326-7598
FSC: 5330
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.418 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
surface_treatmentPHOSPHATE MANGANESE OR PHOSPHATE ZINC CASE
housing_bore_diameter5.254 INCHES MINIMUM AND 5.259 INCHES MAXIMUM IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter3.799 INCHES MINIMUM AND 3.801 INCHES MAXIMUM IN
surface_treatment_document_and_classificationDOD-P-16232,TY M,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR DOD-P-16232,TY Z,CL 2 FED SPEC 2ND TREATMENT RESPONSE CASE
NSN5330-01-326-7598
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12358784-1 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
SEALING ELEMENT STYLE: VERTICAL
SEAL WIDTH: 0.418 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER: 3.799 INCHES MINIMUM AND 3.801 INCHES MAXIMUM IN
CASE STYLE: SQUARE
MATERIAL: STEEL CORROSION RESISTING SPRING
SURFACE TREATMENT: PHOSPHATE MANGANESE OR PHOSPHATE ZINC CASE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: DOD-P-16232,TY M,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR DOD-P-16232,TY Z,CL 2 FED SPEC 2ND TREATMENT RESPONSE CASE
TECHNICAL CHARACTERISTICS (FLIS)
SEALING ELEMENT STYLEVERTICAL
SEAL WIDTH0.418 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER3.799 INCHES MINIMUM AND 3.801 INCHES MAXIMUM IN
CASE STYLESQUARE
MATERIALSTEEL CORROSION RESISTING SPRING
SURFACE TREATMENTPHOSPHATE MANGANESE OR PHOSPHATE ZINC CASE
MATERIALRUBBER FLUOROCARBON CLASS FPM SEALING ELEMENT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONDOD-P-16232,TY M,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR DOD-P-16232,TY Z,CL 2 FED SPEC 2ND TREATMENT RESPONSE CASE
MATERIALSTEEL CASE
HOUSING BORE DIAMETER5.254 INCHES MINIMUM AND 5.259 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
N6321Interchangeable
interchangeable cross-reference
interchangeable
538101Interchangeable
interchangeable cross-reference
interchangeable
11SM1TInterchangeable
interchangeable cross-reference
interchangeable
40-612-520Interchangeable
interchangeable cross-reference
interchangeable
WZ1006Interchangeable
interchangeable cross-reference
interchangeable
A65529Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12358784-1?
12358784-1 is a SEAL,PLAIN ENCASED.
What parts can replace 12358784-1?
There are 12 known substitutes for 12358784-1: N6321, 538101, 11SM1T and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12358784-1?
12358784-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-326-7598. This indicates validated use in U.S. government and defense supply chains.
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