PartsTable
Technical Data Sheet

M25988/2-908 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

M25988/2-908: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: RUBBER FLUOROSILICONE CLASS FQ, temp_rating: -90.0 FAHRENHEIT AND 350.0 CELSIUS DEGC, hardness_rating: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM, center_hole_diameter: 0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN, cross-sectional_height: 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN, material_document_and_classification: MIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-397-0829, 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
M25988/2-908
NSN: 5331-01-397-0829
FSC: 5331 — O-ring
CAGE: 1K697 — DBR INDUSTRIES, INC. DBA DBR INDUSTRIES INC (USA)
SPECIFICATIONS
materialRUBBER FLUOROSILICONE CLASS FQ
temp_rating-90.0 FAHRENHEIT AND 350.0 CELSIUS DEGC
hardness_rating70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
center_hole_diameter0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
cross-sectional_height0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
material_document_and_classificationMIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5331-01-397-0829
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: M25988/2-908 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
•
TEMP RATING: -90.0 FAHRENHEIT AND 350.0 CELSIUS DEGC
•
CROSS-SECTIONAL HEIGHT: 0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE
•
COLOR: BLUE
•
CENTER HOLE DIAMETER: 0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
TECHNICAL CHARACTERISTICS
TEMP RATING-90.0 FAHRENHEIT AND 350.0 CELSIUS DEGC
CROSS-SECTIONAL HEIGHT0.084 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A MINIMUM AND 80.0 SHORE DUROMETER A MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-25988 MIL SPEC SINGLE MATERIAL RESPONSE
COLORBLUE
CENTER HOLE DIAMETER0.635 INCHES MINIMUM AND 0.653 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROSILICONE CLASS FQ
SUBSTITUTES & CROSS-REFERENCES 6
S8316ADBReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
S8316AD8Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5331PL0166456Reference document
Same NSN cross-reference
Reference document — Informative reference only
MIL-DTL-25988/2Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-R-25988Reference document
Same NSN cross-reference
Reference document — Secondary reference
S9412-558Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M25988/2-908?
M25988/2-908 is a O-RING.
What parts can replace M25988/2-908?
There are 6 known substitutes for M25988/2-908: S8316ADB, S8316AD8, 5331PL0166456 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M25988/2-908?
M25988/2-908 is cataloged in the U.S. Government catalog under NSN 5331-01-397-0829. This indicates validated use in U.S. government and defense supply chains.
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