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Technical Data Sheet
PartsTable / O-RING / 99-1103-5-D1-S1 PC25
99-1103-5-D1-S1 PC25 ✓ 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 O-RING is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-480-2255, 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
99-1103-5-D1-S1 PC25
NSN: 5331-00-480-2255
FSC: 5331 — O-RING
CAGE: 0X9M7 — FAD PENNSYLVANIA INC DBA THE TITUS CO (USA)
SPECIFICATIONS
Part Number99-1103-5-D1-S1 PC25
NSN5331-00-480-2255
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 99-1103-5-D1-S1 PC25 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 16
91103-37635Interchangeable
interchangeable cross-reference
interchangeable
A6689-139-222Interchangeable
interchangeable cross-reference
interchangeable
AS568-139E540-8CPInterchangeable
interchangeable cross-reference
interchangeable
2-139E540-8Interchangeable
interchangeable cross-reference
interchangeable
AS568-139E540-8Interchangeable
interchangeable cross-reference
interchangeable
2-139E540-80Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 99-1103-5-D1-S1 PC25?
99-1103-5-D1-S1 PC25 is a O-RING.
What parts can replace 99-1103-5-D1-S1 PC25?
There are 16 known substitutes for 99-1103-5-D1-S1 PC25: 91103-37635, A6689-139-222, AS568-139E540-8CP and 13 more. Substitute compatibility should be verified for your specific system.
Is 99-1103-5-D1-S1 PC25 still available?
99-1103-5-D1-S1 PC25 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