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Technical Data Sheet
PartsTable / COMPONENT / MIL-H-9890
MIL-H-9890 ✓ 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 LOOP,STRAP FASTENER is a the manufacturer industrial component. Key specifications include insignia: NOT INCLUDED, material: STEEL, inside_width: 0.1205 INCHES NOMINAL IN, inside_length: 0.759 INCHES NOMINAL IN, outside_width: 0.553 INCHES NOMINAL IN, overall_width: 2.469 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-753-5578, 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
MIL-H-9890
NSN: 5340-00-753-5578
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
insigniaNOT INCLUDED
materialSTEEL
inside_width0.1205 INCHES NOMINAL IN
inside_length0.759 INCHES NOMINAL IN
outside_width0.553 INCHES NOMINAL IN
overall_width2.469 INCHES NOMINAL IN
overall_length0.984 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
painted_featureNOT INCLUDED
enameled_featureNOT INCLUDED
style_designatorRECTANGLE
surface_treatmentOXIDE
buckle_style_designatorSCALLOPED EDGE
NSN5340-00-753-5578
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MIL-H-9890 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
•
INSIDE LENGTH: 2.313 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGLE
•
SURFACE TREATMENT: OXIDE
•
MATERIAL: COPPER ALLOY 857
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND A CLASS
•
OUTSIDE WIDTH: 0.875 INCHES NOMINAL IN
•
PAINTED FEATURE: INCLUDED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH2.688 INCHES NOMINAL IN
INSIDE LENGTH2.313 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGLE
SURFACE TREATMENTOXIDE
MATERIALCOPPER ALLOY 857
NONDEFINITIVE SPEC/STD DATA2 TYPE AND A CLASS
OUTSIDE WIDTH0.875 INCHES NOMINAL IN
PAINTED FEATUREINCLUDED
INSIDE WIDTH0.500 INCHES NOMINAL IN
COLORBLACK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
TYPE2CLASSAInterchangeable
interchangeable cross-reference
interchangeable
MILA3777Interchangeable
interchangeable cross-reference
interchangeable
C633WInterchangeable
interchangeable cross-reference
interchangeable
MILH9890Interchangeable
interchangeable cross-reference
interchangeable
TYPE1CLASSAInterchangeable
interchangeable cross-reference
interchangeable
4-1-139Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-H-9890?
MIL-H-9890 is a LOOP,STRAP FASTENER.
What parts can replace MIL-H-9890?
There are 10 known substitutes for MIL-H-9890: TYPE2CLASSA, MILA3777, C633W and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-H-9890?
MIL-H-9890 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-753-5578. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026