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PartsTable / COMPONENT / B1852
B1852 ✓ 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 SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, bore_diameter: 0.391 INCHES NOMINAL IN, coil_quantity: 13-1/2, hole_diameter: 0.109 INCHES NOMINAL IN, overall_height: 0.120 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-633-1875, 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
B1852
NSN: 5340-00-633-1875
FSC: 5340
CAGE: 88239 — NEO-SIL RUBBER PRODUCTS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
bore_diameter0.391 INCHES NOMINAL IN
coil_quantity13-1/2
hole_diameter0.109 INCHES NOMINAL IN
overall_height0.120 INCHES NOMINAL IN
inside_diameter0.268 INCHES NOMINAL IN
style_designatorCYLINDRICAL
spring_free_length1.390 INCHES NOMINAL IN
coil_helix_directionRIGHT-HAND
end_item_identificationW/S: AIRCRAFT, (AC-130H, MC-130H, EC-130E, HC-130); AIRCRAFT, STRATO
outside/top_flange_diameter0.328 INCHES NOMINAL IN
NSN5340-00-633-1875
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: B1852 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
•
MATERIAL: RUBBER SYNTHETIC
•
OUTSIDE/TOP FLANGE DIAMETER: 0.328 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.109 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SYNTHETIC
OVERALL HEIGHT0.120 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.328 INCHES NOMINAL IN
HOLE DIAMETER0.109 INCHES NOMINAL IN
END ITEM IDENTIFICATIONW/S: AIRCRAFT, (AC-130H, MC-130H, EC-130E, HC-130); AIRCRAFT, STRATO
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
2-1017-1Upgraded Successor
successor cross-reference
successor
HS360Upgraded Successor
successor cross-reference
successor
B1852Interchangeable
interchangeable cross-reference
interchangeable
1AB1852Interchangeable
interchangeable cross-reference
interchangeable
21-017Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1852?
B1852 is a SPRING,HELICAL,COMPRESSION.
What parts can replace B1852?
There are 5 known substitutes for B1852: 2-1017-1, HS360, B1852 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B1852?
B1852 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-633-1875. 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