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493750-361 — SEAL,PLAIN ENCASED

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

493750-361: SEAL,PLAIN ENCASED.

The SEAL,PLAIN ENCASED is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC SEALING ELEMENT, case_style: SQUARE, seal_width: 0.750 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE CASE, housing_bore_diameter: 15.438 INCHES NOMINAL IN, sealing_element_style: ANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-579-7666, 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
493750-361
NSN: 5330-00-579-7666
FSC: 5330 — Packing and Gasket Materials
CAGE: 30086 — L3HARRIS MARITIME POWER & ENERGY SOLUTIONS, INC. DBA SPD ELECTRICAL SYSTEMS, INC. (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC SEALING ELEMENT
case_styleSQUARE
seal_width0.750 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE CASE
housing_bore_diameter15.438 INCHES NOMINAL IN
sealing_element_styleANGULAR
accommodated_shaft_diameter13.938 INCHES NOMINAL IN
NSN5330-00-579-7666
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 493750-361 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: 0.750 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: ANGULAR
•
HOUSING BORE DIAMETER: 15.438 INCHES NOMINAL IN
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 13.938 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE CASE
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.750 INCHES NOMINAL IN
SEALING ELEMENT STYLEANGULAR
HOUSING BORE DIAMETER15.438 INCHES NOMINAL IN
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER13.938 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE CASE
MATERIALSTEEL CASE
MATERIALRUBBER SYNTHETIC SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 4
00044Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
505912Reference document
Same NSN cross-reference
Reference document — Secondary reference
1394250Reference document
Same NSN cross-reference
Reference document — Secondary reference
1544HMS1330Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 493750-361?
493750-361 is a SEAL,PLAIN ENCASED.
What parts can replace 493750-361?
There are 4 known substitutes for 493750-361: 00044, 505912, 1394250 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 493750-361?
493750-361 is cataloged in the U.S. Government catalog under NSN 5330-00-579-7666. 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.