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305818 — O-RING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

305818: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROCARBON CLASS FPM. This part is cataloged in the U.S.

Government catalog under NSN 6685-01-168-2916, 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
305818
NSN: 6685-01-168-2916
NIINs: 011682916, 014171069
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
CAGE: 72100 — LIFTEC INC DIV LIFTEC, INC. (USA)
SPECIFICATIONS
materialRUBBER FLUOROCARBON CLASS FPM
NSN6685-01-168-2916
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available O-RING TITLE COMPONENT PN 305818 MFR O-RING
KEY FEATURES
•
STYLE DESIGNATOR: THREADED STRAIGHT SHANK
•
BULB TIP OUTSIDE DIAMETER: 0.438 INCHES NOMINAL IN
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EXTERNAL THREAD SIZE: 1/2 IN. NPT1/2 IN. NPT IN
•
BULB TIP LENGTH: 3.500 INCHES NOMINAL IN
•
INTERNAL THREAD SIZE: 5/8 IN.NPT ALL BORES IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORTHREADED STRAIGHT SHANK
OVERALL LENGTH4.875 INCHES NOMINAL4.875 INCHES NOMINAL IN
BULB TIP OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
EXTERNAL THREAD SIZE1/2 IN. NPT1/2 IN. NPT IN
BULB TIP LENGTH3.500 INCHES NOMINAL IN
SPECIAL FEATURESREMOVABLE BRASS CAP AFFIXED W/CHAIN:NOT PROVIDED;
INTERNAL THREAD SIZE5/8 IN.NPT ALL BORES IN
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 1
2438895-2Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 305818?
305818 is a O-RING.
What parts can replace 305818?
There is 1 known substitute for 305818: 2438895-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 305818?
305818 is cataloged in the U.S. Government catalog under NSN 6685-01-168-2916. 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.