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AMS-R-25988 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AMS-R-25988: 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 FAHRENHEIT DEGF, hardness_rating: 75.0 SHORE DUROMETER A NOMINAL, center_hole_diameter: 0.914 INCHES MINIMUM AND 0.934 INCHES MAXIMUM IN, cross-sectional_height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN, end_item_identification: AIRCRAFT, B-2 BOMBER (ATB). This part is cataloged in the U.S.

Government catalog under NSN 5331-00-099-7533, 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
AMS-R-25988
NSN: 5331-00-099-7533
NIINs: 000997533, 010078798, 011293145, 012068069, 012102836, 014370082, 014731584, 014927052, 014944559, 014949943, 015027567, 015030357
FSC: 5331 — O-ring
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialRUBBER FLUOROSILICONE CLASS FQ
temp_rating-90.0 FAHRENHEIT AND 350.0 FAHRENHEIT DEGF
hardness_rating75.0 SHORE DUROMETER A NOMINAL
center_hole_diameter0.914 INCHES MINIMUM AND 0.934 INCHES MAXIMUM IN
cross-sectional_height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
end_item_identificationAIRCRAFT, B-2 BOMBER (ATB)
specification/standard_data81349-MIL-R-25988/2/INACTIVE GOVERNMENT SPECIFICATION
material_document_and_classificationMIL-R-25988 TYPE 1, CLASS 3, GRADE 75 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5331-00-099-7533
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AMS-R-25988 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: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 2.381 INCHES NOMINAL IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
CENTER HOLE DIAMETER: 2.158 INCHES MINIMUM AND 2.192 INCHES MAXIMUM IN
•
MATERIAL: RUBBER FLUOROSILICONE CLASS FQ
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
OUTSIDE DIAMETER2.381 INCHES NOMINAL IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE125 MAXIMUM
CENTER HOLE DIAMETER2.158 INCHES MINIMUM AND 2.192 INCHES MAXIMUM IN
MATERIALRUBBER FLUOROSILICONE CLASS FQ
SUBSTITUTES & CROSS-REFERENCES 8
M25988/1-139Reference document
Same NSN cross-reference
Reference document — Secondary reference
B63115-139Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
2-139 L449-6Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
C007-139Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
MILR25988ESReference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
2-139 L449-65Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AMS-R-25988?
AMS-R-25988 is a O-RING.
What parts can replace AMS-R-25988?
There are 8 known substitutes for AMS-R-25988: M25988/1-139, B63115-139, 2-139 L449-6 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AMS-R-25988?
AMS-R-25988 is cataloged in the U.S. Government catalog under NSN 5331-00-099-7533. This indicates validated use in U.S. government and defense supply chains.
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