PartsTable
Technical Data Sheet
H260K203 ✓ 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 GASKET is a the manufacturer industrial component. Key specifications include material: CORK AND CELLULOSE OVERALL, hole_diameter: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, overall_width: 2.500 INCHES NOMINAL IN, aperture_width: 1.000 INCHES NOMINAL IN, overall_length: 3.000 INCHES NOMINAL IN, aperture_length: 1.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-313-7645, 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
H260K203
NSN: 5330-00-313-7645
FSC: 5330
CAGE: 93568 — HARSCO CORP BMY-COMBAT SYSTEMS DIV (USA)
SPECIFICATIONS
materialCORK AND CELLULOSE OVERALL
hole_diameter0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
overall_width2.500 INCHES NOMINAL IN
aperture_width1.000 INCHES NOMINAL IN
overall_length3.000 INCHES NOMINAL IN
aperture_length1.750 INCHES NOMINAL IN
inside_corner_radius0.125 INCHES NOMINAL IN
cross-sectional_thickness0.030 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
material_document_and_classificationMIL-G-12803,+3444A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
NSN5330-00-313-7645
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H260K203 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
APERTURE WIDTH: 1.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,+3444A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
APERTURE LENGTH: 1.750 INCHES NOMINAL IN
MATERIAL: CORK AND CELLULOSE OVERALL
INSIDE CORNER RADIUS: 0.125 INCHES NOMINAL IN
HOLE DIAMETER: 0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS (FLIS)
APERTURE WIDTH1.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,+3444A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
OVERALL LENGTH3.000 INCHES NOMINAL IN
APERTURE LENGTH1.750 INCHES NOMINAL IN
MATERIALCORK AND CELLULOSE OVERALL
INSIDE CORNER RADIUS0.125 INCHES NOMINAL IN
HOLE DIAMETER0.406 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OVERALL WIDTH2.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
CROSS-SECTIONAL THICKNESS0.030 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
163-78Interchangeable
interchangeable cross-reference
interchangeable
10433Interchangeable
interchangeable cross-reference
interchangeable
16323Interchangeable
interchangeable cross-reference
interchangeable
INVOLUTE PITCH3 NO.3 5-1/4Interchangeable
interchangeable cross-reference
interchangeable
17706Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 25Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H260K203?
H260K203 is a GASKET.
What parts can replace H260K203?
There are 16 known substitutes for H260K203: 163-78, 10433, 16323 and 13 more. Substitute compatibility should be verified for your specific system.
Is H260K203 still available?
H260K203 is currently cancelled.
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