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Technical Data Sheet
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UT-25 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

UT-25: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include end_item_identification: RQ-4A/GLOBAL HAWK A. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-151-8275, 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
UT-25
NSN: 5331-01-151-8275
NIINs: 011518275, 015854723
FSC: 5331 — O-ring
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
end_item_identificationRQ-4A/GLOBAL HAWK A
NSN5331-01-151-8275
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: UT-25 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
SUBSTITUTES & CROSS-REFERENCES 3
E766 ITEM 172Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MR-1773AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
102390Reference document
Same NSN cross-reference
Reference document — Secondary 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 UT-25?
UT-25 is a O-RING.
What parts can replace UT-25?
There are 3 known substitutes for UT-25: E766 ITEM 172, MR-1773A, 102390. Substitute compatibility should be verified for your specific system.
What is the NSN for UT-25?
UT-25 is cataloged in the U.S. Government catalog under NSN 5331-01-151-8275. This indicates validated use in U.S. government and defense supply chains.
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