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PartsTable / COMPONENT / ASTM-F1145-I1B 1/2X9
ASTM-F1145-I1B 1/2X9 ✓ 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 ASTM-F1145-I1B 1/2X9 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 5340-00-150-4777, 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
ASTM-F1145-I1B 1/2X9
NSN: 5340-00-150-4777
FSC: 5340
CAGE: 81346 — AMERICAN SOCIETY FOR TESTING AND MATERIALS DBA ASTM INTERNATIONAL (USA)
SPECIFICATIONS
Part NumberASTM-F1145-I1B 1/2X9
NSN5340-00-150-4777
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ASTM-F1145-I1B 1/2X9 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
•
BODY STYLE: ROUND OPEN BODY
•
THREAD CLASS: 2B BODY
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) BODY
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 1 GRADE AND B CLASS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
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BODY LENGTH: 10.500 INCHES MINIMUM IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
BODY STYLEROUND OPEN BODY
THREAD CLASS2B BODY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) BODY
MATERIALSTEEL OVERALL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 GRADE AND B CLASS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
BODY LENGTH10.500 INCHES MINIMUM IN
SURFACE TREATMENTZINC OVERALL
NOMINAL THREAD SIZE0.500 INCHES BODY IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
ASTM F 1145-5Upgraded Successor
successor cross-reference
successor
FF-T-791Upgraded Successor
successor cross-reference
successor
11157-1-64Upgraded Successor
successor cross-reference
successor
MS27950-7Upgraded Successor
successor cross-reference
successor
FFT791-TY1-FM1-CL8-5/16X4 1/2Upgraded Successor
successor cross-reference
successor
HG-227-5/16X4 1/2Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ASTM-F1145-I1B 1/2X9?
ASTM-F1145-I1B 1/2X9 is a ASTM-F1145-I1B 1/2X9.
What parts can replace ASTM-F1145-I1B 1/2X9?
There are 19 known substitutes for ASTM-F1145-I1B 1/2X9: ASTM F 1145-5, FF-T-791, 11157-1-64 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ASTM-F1145-I1B 1/2X9?
ASTM-F1145-I1B 1/2X9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-150-4777. 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