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Technical Data Sheet
PartsTable / COMPONENT / 287-1020ISSUE9PT3
287-1020ISSUE9PT3 ✓ 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 is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, seal_width: 0.438 INCHES NOMINAL IN, construction: SOLID, housing_bore_diameter: 6.250 INCHES NOMINAL IN, accommodated_shaft_diameter: 5.250 INCHES NOMINAL IN, cross-sectional_shape_style: SINGLE LIP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-298-0533, 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
287-1020ISSUE9PT3
NSN: 5330-00-298-0533
FSC: 5330
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
seal_width0.438 INCHES NOMINAL IN
constructionSOLID
housing_bore_diameter6.250 INCHES NOMINAL IN
accommodated_shaft_diameter5.250 INCHES NOMINAL IN
cross-sectional_shape_styleSINGLE LIP
NSN5330-00-298-0533
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 287-1020ISSUE9PT3 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 DIAMETER: 5.250 INCHES NOMINAL IN
•
CONSTRUCTION: SOLID
•
MATERIAL: STEEL SPRING
•
CROSS-SECTIONAL SHAPE STYLE: SINGLE LIP
•
SEAL WIDTH: 0.438 INCHES NOMINAL IN
•
HOUSING BORE DIAMETER: 6.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
ACCOMMODATED SHAFT DIAMETER5.250 INCHES NOMINAL IN
CONSTRUCTIONSOLID
MATERIALSTEEL SPRING
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
CROSS-SECTIONAL SHAPE STYLESINGLE LIP
SEAL WIDTH0.438 INCHES NOMINAL IN
HOUSING BORE DIAMETER6.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
3727Interchangeable
interchangeable cross-reference
interchangeable
52451Interchangeable
interchangeable cross-reference
interchangeable
55448Interchangeable
interchangeable cross-reference
interchangeable
G727Interchangeable
interchangeable cross-reference
interchangeable
VG-486Interchangeable
interchangeable cross-reference
interchangeable
8322DRInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 287-1020ISSUE9PT3?
287-1020ISSUE9PT3 is a SEAL,PLAIN.
What parts can replace 287-1020ISSUE9PT3?
There are 17 known substitutes for 287-1020ISSUE9PT3: 3727, 52451, 55448 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 287-1020ISSUE9PT3?
287-1020ISSUE9PT3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-298-0533. 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