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Technical Data Sheet
PartsTable / COMPONENT / 307-1/2
307-1/2 ✓ 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 307-1/2 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-465-3195, 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
307-1/2
NSN: 5340-00-465-3195
FSC: 5340
CAGE: 73164 — FIGGIE INTL INC FEE AND MASON MFG CO DIV (USA)
SPECIFICATIONS
Part Number307-1/2
NSN5340-00-465-3195
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 307-1/2 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
•
TUBE ACCOMMODATION OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
SUPPORTED ITEM AND QUANTITY: 1 TUBE
•
SURFACE TREATMENT: COPPER
•
STYLE DESIGNATOR: SPLIT RING
•
MATERIAL: IRON MALLEABLE
TECHNICAL CHARACTERISTICS (FLIS)
TUBE ACCOMMODATION OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
SUPPORTED ITEM AND QUANTITY1 TUBE
SURFACE TREATMENTCOPPER
STYLE DESIGNATORSPLIT RING
MATERIALIRON MALLEABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
A733S-86CFBInterchangeable
interchangeable cross-reference
interchangeable
ASTM-A733Interchangeable
interchangeable cross-reference
interchangeable
339-1/2X6Interchangeable
interchangeable cross-reference
interchangeable
17391-1Interchangeable
interchangeable cross-reference
interchangeable
S2946Interchangeable
interchangeable cross-reference
interchangeable
307-12Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 307-1/2?
307-1/2 is a 307-1/2.
What parts can replace 307-1/2?
There are 12 known substitutes for 307-1/2: A733S-86CFB, ASTM-A733, 339-1/2X6 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 307-1/2?
307-1/2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-465-3195. 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