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4618-2 — STEM,FLUID VALVE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4618-2: STEM,FLUID VALVE.

The STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: EMORY S. LAND CLASS AS.

This part is cataloged in the U.S. Government catalog under NSN 5330-00-641-4255, 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
4618-2
NSN: 5330-00-641-4255
NIINs: 006414255, 014422835
FSC: 5330 — Packing and Gasket Materials
CAGE: 0UBG9 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DIV EPD (USA)
SPECIFICATIONS
end_item_identificationEMORY S. LAND CLASS AS
NSN5330-00-641-4255
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4618-2 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: 0.359 INCHES NOMINAL IN
•
SEALING ELEMENT STYLE: VERTICAL
•
HOUSING BORE DIAMETER: 2.714 INCHES NOMINAL IN
•
ACCOMMODATED SHAFT MAXIMUM RATED SPEED: 2000 FEET PER MINUTE FT
•
CASE STYLE: SQUARE
•
ACCOMMODATED SHAFT DIAMETER: 1.750 INCHES NOMINAL IN
•
MATERIAL: STEEL CASE
TECHNICAL CHARACTERISTICS
SEAL WIDTH0.359 INCHES NOMINAL IN
SEALING ELEMENT STYLEVERTICAL
HOUSING BORE DIAMETER2.714 INCHES NOMINAL IN
ACCOMMODATED SHAFT MAXIMUM RATED SPEED2000 FEET PER MINUTE FT
CASE STYLESQUARE
ACCOMMODATED SHAFT DIAMETER1.750 INCHES NOMINAL IN
MATERIALSTEEL CASE
MATERIALWOOL SEALING ELEMENT
SUBSTITUTES & CROSS-REFERENCES 8
B519Reference document
Same NSN cross-reference
Reference document — Secondary reference
1411FEReference document
Same NSN cross-reference
Reference document — Secondary reference
1-672Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
420CAReference document
Same NSN cross-reference
Reference document — Secondary reference
M297AT5000Reference document
Same NSN cross-reference
Reference document — Secondary reference
RB5613Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4618-2?
4618-2 is a STEM,FLUID VALVE.
What parts can replace 4618-2?
There are 8 known substitutes for 4618-2: B519, 1411FE, 1-672 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4618-2?
4618-2 is cataloged in the U.S. Government catalog under NSN 5330-00-641-4255. 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.