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52B2089-1 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

52B2089-1: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: FRICTION, width_across_flats: 1.625 INCHES NOMINAL IN, opening_inside_diameter_for_which_designed: 1.750 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-021-5157, 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
52B2089-1
NSN: 5340-00-021-5157
FSC: 5340 — Hardware, Commercial
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
materialPLASTIC
design_typeFRICTION
width_across_flats1.625 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed1.750 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
NSN5340-00-021-5157
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 52B2089-1 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
•
WIDTH ACROSS FLATS: 1.625 INCHES NOMINAL IN
•
DESIGN TYPE: FRICTION
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 1.750 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.625 INCHES NOMINAL IN
DESIGN TYPEFRICTION
OPENING INSIDE DIAMETER FOR WHICH DESIGNED1.750 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
MATERIALPLASTIC
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
5340PL0792412Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 52B2089-1?
52B2089-1 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 52B2089-1?
There is 1 known substitute for 52B2089-1: 5340PL0792412. Substitute compatibility should be verified for your specific system.
What is the NSN for 52B2089-1?
52B2089-1 is cataloged in the U.S. Government catalog under NSN 5340-00-021-5157. 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.