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Technical Data Sheet
PartsTable / COMPONENT / D320-659B
D320-659B ✓ 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: LEATHER SEALING ELEMENT, case_style: SQUARE, seal_width: 0.562 INCHES NOMINAL IN, housing_bore_diameter: 5.501 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 4.500 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 5330-00-154-8427, 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
D320-659B
NSN: 5330-00-154-8427
FSC: 5330
CAGE: 81782 — ALMON JOHNSON LTD (USA)
SPECIFICATIONS
materialLEATHER SEALING ELEMENT
case_styleSQUARE
seal_width0.562 INCHES NOMINAL IN
housing_bore_diameter5.501 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter4.500 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed2000 FEET PER MINUTE FT
NSN5330-00-154-8427
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D320-659B 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 MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
SEALING ELEMENT STYLE: ANGULAR
•
CASE STYLE: SQUARE
•
MATERIAL: STEEL CASE
•
ACCOMMODATED SHAFT DIAMETER: 4.500 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 5.501 INCHES NOMINAL IN
•
SEAL WIDTH: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
SEALING ELEMENT STYLEANGULAR
CASE STYLESQUARE
MATERIALSTEEL CASE
MATERIALLEATHER SEALING ELEMENT
ACCOMMODATED SHAFT DIAMETER4.500 INCHES NOMINAL IN
HOUSING BORE DIAMETER5.501 INCHES NOMINAL IN
SEAL WIDTH0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
55200Interchangeable
interchangeable cross-reference
interchangeable
1A9859Interchangeable
interchangeable cross-reference
interchangeable
X1-63Interchangeable
interchangeable cross-reference
interchangeable
62AX310Interchangeable
interchangeable cross-reference
interchangeable
59007HInterchangeable
interchangeable cross-reference
interchangeable
2307Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D320-659B?
D320-659B is a SEAL,PLAIN ENCASED.
What parts can replace D320-659B?
There are 25 known substitutes for D320-659B: 55200, 1A9859, X1-63 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D320-659B?
D320-659B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-154-8427. 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