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52379 ✓ Verified by PartsTable
Bestway · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

CAPACITOR,FIXED,PAPER DIELECTRIC. Key specifications include material: RUBBER SYNTHETIC OVERALL, fork_height: 5.310 INCHES MINIMUM AND 5.312 INCHES MAXIMUM IN, connection_end_type: FLANGE, peripheral_diameter: 1.250 INCHES NOMINAL IN, center_hole_diameter: 0.875 INCHES NOMINAL IN, cross-sectional_height: 0.344 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-019-6050, 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
52379
NSN: 5330-00-019-6050
FSC: 5330
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC OVERALL
fork_height5.310 INCHES MINIMUM AND 5.312 INCHES MAXIMUM IN
connection_end_typeFLANGE
peripheral_diameter1.250 INCHES NOMINAL IN
center_hole_diameter0.875 INCHES NOMINAL IN
cross-sectional_height0.344 INCHES NOMINAL IN
cross-sectional_shape_styleV
NSN5330-00-019-6050
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 52379 MFR: Bestway ⚠ 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
•
CROSS-SECTIONAL HEIGHT: 0.344 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: V
•
PERIPHERAL DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: RUBBER SYNTHETIC OVERALL
•
CENTER HOLE DIAMETER: 0.875 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.344 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEV
PERIPHERAL DIAMETER1.250 INCHES NOMINAL IN
MATERIALRUBBER SYNTHETIC OVERALL
CENTER HOLE DIAMETER0.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
C85585Interchangeable
interchangeable cross-reference
interchangeable
646F5-8X1-2Interchangeable
interchangeable cross-reference
interchangeable
5159262Interchangeable
interchangeable cross-reference
interchangeable
01460Interchangeable
interchangeable cross-reference
interchangeable
357-9594-000Interchangeable
interchangeable cross-reference
interchangeable
609-0770-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 52379?
52379 is a CAPACITOR,FIXED,PAPER DIELECTRIC manufactured by Bestway.
What parts can replace 52379?
There are 11 known substitutes for 52379: C85585, 646F5-8X1-2, 5159262 and 8 more. Substitute compatibility should be verified for your specific system.
Is 52379 still available?
52379 is currently cancelled.
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Last verified: July 2026