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Technical Data Sheet
PartsTable / COMPONENT / 5498128-1
5498128-1 ✓ 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: 0.625 INCHES NOMINAL IN, outside_diameter: 9.758 INCHES NOMINAL IN, surface_treatment: PLASTIC CASE, housing_bore_diameter: 9.750 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 5330-01-322-8783, 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
5498128-1
NSN: 5330-01-322-8783
FSC: 5330
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.625 INCHES NOMINAL IN
outside_diameter9.758 INCHES NOMINAL IN
surface_treatmentPLASTIC CASE
housing_bore_diameter9.750 INCHES NOMINAL IN
sealing_element_styleVERTICAL
accommodated_shaft_diameter8.500 INCHES NOMINAL IN
NSN5330-01-322-8783
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 5498128-1 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
•
HOUSING BORE DIAMETER: 9.750 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL
•
SURFACE TREATMENT: PLASTIC CASE
•
SEAL WIDTH: 0.625 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 8.500 INCHES NOMINAL IN
•
MATERIAL: STEEL SPRING
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER9.750 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL
SURFACE TREATMENTPLASTIC CASE
SEAL WIDTH0.625 INCHES NOMINAL IN
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER8.500 INCHES NOMINAL IN
MATERIALSTEEL SPRING
MATERIALSTEEL CASE
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR SEALING ELEMENT
OUTSIDE DIAMETER9.758 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
8-5002Interchangeable
interchangeable cross-reference
interchangeable
167Interchangeable
interchangeable cross-reference
interchangeable
KIT2Interchangeable
interchangeable cross-reference
interchangeable
KDZ2701Interchangeable
interchangeable cross-reference
interchangeable
CAT90B4TYPECH23-4Interchangeable
interchangeable cross-reference
interchangeable
1203-9104Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5498128-1?
5498128-1 is a SEAL,PLAIN ENCASED.
What parts can replace 5498128-1?
There are 14 known substitutes for 5498128-1: 8-5002, 167, KIT2 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5498128-1?
5498128-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-01-322-8783. 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