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Technical Data Sheet
PartsTable / COMPONENT / 4MHA007ITEM18
4MHA007ITEM18 ✓ 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 SEAL,PISTON 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 5330-00-124-6880, 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
4MHA007ITEM18
NSN: 5330-00-124-6880
FSC: 5330
CAGE: 05283 — SHEFFER CORP (USA)
SPECIFICATIONS
Part Number4MHA007ITEM18
NSN5330-00-124-6880
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4MHA007ITEM18 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
UK10-104Interchangeable
interchangeable cross-reference
interchangeable
321-030-903Interchangeable
interchangeable cross-reference
interchangeable
Y5F-UK10-104Interchangeable
interchangeable cross-reference
interchangeable
RYDSMSDInterchangeable
interchangeable cross-reference
interchangeable
80P1Interchangeable
interchangeable cross-reference
interchangeable
5L5811-004-95Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4MHA007ITEM18?
4MHA007ITEM18 is a SEAL,PISTON.
What parts can replace 4MHA007ITEM18?
There are 17 known substitutes for 4MHA007ITEM18: UK10-104, 321-030-903, Y5F-UK10-104 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4MHA007ITEM18?
4MHA007ITEM18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-124-6880. 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