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D5051 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

D5051: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: STEEL CASE, case_style: SQUARE, seal_width: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN, housing_bore_diameter: 4.249 INCHES NOMINAL IN, sealing_element_style: ANGULAR, accommodated_shaft_diameter: 3.812 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-141-4192, 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
D5051
NSN: 5330-00-141-4192
FSC: 5330 — Packing and Gasket Materials
CAGE: 8E499 — KOEHRING CRANES AND EXCAVATORS INC SUB OF NORTHWEST ENGINEERING CO (USA)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
housing_bore_diameter4.249 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter3.812 INCHES NOMINAL IN
accommodated_shaft_maximum_rated_speed3000 FEET PER MINUTE FT
NSN5330-00-141-4192
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D5051 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
•
SEAL WIDTH: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 4.249 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 3000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 3.812 INCHES NOMINAL IN
•
MATERIAL: LEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER4.249 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED3000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER3.812 INCHES NOMINAL IN
MATERIALLEATHER OR RUBBER SYNTHETIC SEALING ELEMENT
MATERIALSTEEL CASE
SUBSTITUTES & CROSS-REFERENCES 1
5330-300000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D5051?
D5051 is a SEAL,PLAIN ENCASED.
What parts can replace D5051?
There is 1 known substitute for D5051: 5330-300000. Substitute compatibility should be verified for your specific system.
What is the NSN for D5051?
D5051 is cataloged in the U.S. Government catalog under NSN 5330-00-141-4192. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.