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PartsTable / COMPONENT / 287784
287784 ✓ 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: 0.375 INCHES NOMINAL IN, attachment_method: CEMENTED, fsc_application_data: ENGINE,RECIPROCATING,AIRCRAFT, housing_bore_diameter: 1.504 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-290-7356, 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
287784
NSN: 5330-00-290-7356
FSC: 5330
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL CASE
case_styleSQUARE
seal_width0.375 INCHES NOMINAL IN
attachment_methodCEMENTED
fsc_application_dataENGINE,RECIPROCATING,AIRCRAFT
housing_bore_diameter1.504 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter0.875 INCHES NOMINAL IN
NSN5330-00-290-7356
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 287784 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: 1.504 INCHES NOMINAL IN
•
ATTACHMENT METHOD: CEMENTED
•
CASE STYLE: SQUARE
•
MATERIAL: STEEL CASE
•
SEAL WIDTH: 0.375 INCHES NOMINAL IN
•
FSC APPLICATION DATA: ENGINE,RECIPROCATING,AIRCRAFT
•
ACCOMMODATED SHAFT DIAMETER: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOUSING BORE DIAMETER1.504 INCHES NOMINAL IN
ATTACHMENT METHODCEMENTED
CASE STYLESQUARE
MATERIALSTEEL CASE
SEAL WIDTH0.375 INCHES NOMINAL IN
FSC APPLICATION DATAENGINE,RECIPROCATING,AIRCRAFT
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
ACCOMMODATED SHAFT DIAMETER0.875 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
28-774Interchangeable
interchangeable cross-reference
interchangeable
028-11676-00Interchangeable
interchangeable cross-reference
interchangeable
028-00774Interchangeable
interchangeable cross-reference
interchangeable
287783Interchangeable
interchangeable cross-reference
interchangeable
32-28395ITEM2Interchangeable
interchangeable cross-reference
interchangeable
28773Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 287784?
287784 is a SEAL,PLAIN ENCASED.
What parts can replace 287784?
There are 10 known substitutes for 287784: 28-774, 028-11676-00, 028-00774 and 7 more. Substitute compatibility should be verified for your specific system.
Is 287784 still available?
287784 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026