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Technical Data Sheet
PartsTable / COMPONENT / 900-3 1/2
900-3 1/2 ✓ 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 900-3 1/2 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-664-1707, 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
900-3 1/2
NSN: 5340-00-664-1707
FSC: 5340
CAGE: 3D631 — INDEPENDENT HARDWARE INC (USA)
SPECIFICATIONS
Part Number900-3 1/2
NSN5340-00-664-1707
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 900-3 1/2 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
•
STAPLE STYLE: SAFETY ADJUSTABLE
•
SLOTTED LEAF LENGTH: 3.500 INCHES NOMINAL IN
•
MATERIAL: STEEL PIN
•
STYLE DESIGNATOR: SINGLE SAFETY
•
MATERIAL THICKNESS: 0.077 INCHES NOMINAL IN
•
FIXED LEAF LENGTH: 1.312 INCHES NOMINAL IN
•
REVERSIBLE FEATURE: NOT INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
STAPLE STYLESAFETY ADJUSTABLE
SLOTTED LEAF LENGTH3.500 INCHES NOMINAL IN
MATERIALSTEEL PIN
STYLE DESIGNATORSINGLE SAFETY
MATERIALSTEEL BODY
MATERIAL THICKNESS0.077 INCHES NOMINAL IN
FIXED LEAF LENGTH1.312 INCHES NOMINAL IN
REVERSIBLE FEATURENOT INCLUDED
MOUNTING HOLE DIAMETER0.157 INCHES NOMINAL IN
MOUNTING HOLE QUANTITY9
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
4629248 PC 103Upgraded Successor
successor cross-reference
successor
1800T4Upgraded Successor
successor cross-reference
successor
1800-1AUpgraded Successor
successor cross-reference
successor
FFH111-1212Upgraded Successor
successor cross-reference
successor
2904Upgraded Successor
successor cross-reference
successor
FF-H-111Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 900-3 1/2?
900-3 1/2 is a 900-3 1/2.
What parts can replace 900-3 1/2?
There are 19 known substitutes for 900-3 1/2: 4629248 PC 103, 1800T4, 1800-1A and 16 more. Substitute compatibility should be verified for your specific system.
Is 900-3 1/2 still available?
900-3 1/2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026