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A298451 ✓ 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 COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL CASE, case_style: SQUARE, seal_width: 0.640 INCHES MINIMUM AND 0.684 INCHES MAXIMUM IN, temp_rating: -65.0 FAHRENHEIT DEGF, housing_bore_diameter: 4.360 INCHES MINIMUM AND 4.390 INCHES MAXIMUM IN, sealing_element_style: VERTICAL-EXTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-891-7826, 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
A298451
NSN: 5330-00-891-7826
FSC: 5330
CAGE: 23705 — FRUEHAUF CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL CASE
case_styleSQUARE
seal_width0.640 INCHES MINIMUM AND 0.684 INCHES MAXIMUM IN
temp_rating-65.0 FAHRENHEIT DEGF
housing_bore_diameter4.360 INCHES MINIMUM AND 4.390 INCHES MAXIMUM IN
sealing_element_styleVERTICAL-EXTERNAL
accommodated_shaft_diameter3.305 INCHES MINIMUM AND 3.309 INCHES MAXIMUM IN
material_document_and_classificationASTM D2000 2BG810A1C1E3K1Z ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT
NSN5330-00-891-7826
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A298451 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
•
CASE STYLE: SQUARE
•
SEAL WIDTH: 0.640 INCHES MINIMUM AND 0.684 INCHES MAXIMUM IN
•
HOUSING BORE DIAMETER: 4.360 INCHES MINIMUM AND 4.390 INCHES MAXIMUM IN
•
ACCOMMODATED SHAFT DIAMETER: 3.305 INCHES MINIMUM AND 3.309 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL CASE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000 2BG810A1C1E3K1Z ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT
•
SEALING ELEMENT STYLE: VERTICAL-EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
CASE STYLESQUARE
SEAL WIDTH0.640 INCHES MINIMUM AND 0.684 INCHES MAXIMUM IN
HOUSING BORE DIAMETER4.360 INCHES MINIMUM AND 4.390 INCHES MAXIMUM IN
ACCOMMODATED SHAFT DIAMETER3.305 INCHES MINIMUM AND 3.309 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL CASE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000 2BG810A1C1E3K1Z ASSN STD SINGLE MATERIAL RESPONSE SEALING ELEMENT
SEALING ELEMENT STYLEVERTICAL-EXTERNAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC 1ST MATERIAL RESPONSE CASE
TEMP RATING-65.0 FAHRENHEIT DEGF
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
ZZI550Interchangeable
interchangeable cross-reference
interchangeable
519596Interchangeable
interchangeable cross-reference
interchangeable
MS35392-174Interchangeable
interchangeable cross-reference
interchangeable
33120Interchangeable
interchangeable cross-reference
interchangeable
1477Interchangeable
interchangeable cross-reference
interchangeable
1816AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A298451?
A298451 is a SEAL,PLAIN ENCASED.
What parts can replace A298451?
There are 29 known substitutes for A298451: ZZI550, 519596, MS35392-174 and 26 more. Substitute compatibility should be verified for your specific system.
Is A298451 still available?
A298451 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