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Technical Data Sheet

M25988/1-908 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

M25988/1-908: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include end_item_identification: ISIL-A00C92. This part is cataloged in the U.S.

Government catalog under NSN 5331-00-279-9322, 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
M25988/1-908
NSN: 5331-00-279-9322
NIINs: 002799322, 016665904
FSC: 5331 — O-ring
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
end_item_identificationISIL-A00C92
NSN5331-00-279-9322
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M25988/1-908 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
•
CROSS-SECTIONAL HEIGHT: 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.818 INCHES NOMINAL IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.818 INCHES NOMINAL IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROSILICONE CLASS FQ
SUBSTITUTES & CROSS-REFERENCES 5
GS570J3J8Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
3-908-11647Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
MIL-DTL-25988/1Reference document
Same NSN cross-reference
Reference document — Identification reference
908-11647Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
MIL-R-25988Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M25988/1-908?
M25988/1-908 is a O-RING.
What parts can replace M25988/1-908?
There are 5 known substitutes for M25988/1-908: GS570J3J8, 3-908-11647, MIL-DTL-25988/1 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M25988/1-908?
M25988/1-908 is cataloged in the U.S. Government catalog under NSN 5331-00-279-9322. This indicates validated use in U.S. government and defense supply chains.
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