PartsTable
Technical Data Sheet
ST7M258-500 ✓ 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 O-RING is a the manufacturer industrial component. Key specifications include color: WHITE, material: RUBBER CHLOROPRENE CLASS CR, temp_rating: -65.0 FAHRENHEIT AND 600.0 FAHRENHEIT DEGF, special_features: MATERIAL REINFORCED WITH FIBERGLASS, center_hole_diameter: 5.000 INCHES NOMINAL IN, cross-sectional_height: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-396-8001, 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
ST7M258-500
NSN: 5331-01-396-8001
FSC: 5331 — O-RING
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
colorWHITE
materialRUBBER CHLOROPRENE CLASS CR
temp_rating-65.0 FAHRENHEIT AND 600.0 FAHRENHEIT DEGF
special_featuresMATERIAL REINFORCED WITH FIBERGLASS
center_hole_diameter5.000 INCHES NOMINAL IN
cross-sectional_height0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
NSN5331-01-396-8001
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST7M258-500 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
COLOR: WHITE
CENTER HOLE DIAMETER: 5.000 INCHES NOMINAL IN
TEMP RATING: -65.0 FAHRENHEIT AND 600.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT: 0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
MATERIAL: RUBBER CHLOROPRENE CLASS CR
TECHNICAL CHARACTERISTICS (FLIS)
COLORWHITE
CENTER HOLE DIAMETER5.000 INCHES NOMINAL IN
TEMP RATING-65.0 FAHRENHEIT AND 600.0 FAHRENHEIT DEGF
SPECIAL FEATURESMATERIAL REINFORCED WITH FIBERGLASS
CROSS-SECTIONAL HEIGHT0.265 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
MATERIALRUBBER CHLOROPRENE CLASS CR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
7600500Interchangeable
interchangeable cross-reference
interchangeable
600500Interchangeable
interchangeable cross-reference
interchangeable
D-9Interchangeable
interchangeable cross-reference
interchangeable
690109Interchangeable
interchangeable cross-reference
interchangeable
690109 ITEM 3Interchangeable
interchangeable cross-reference
interchangeable
460-500Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST7M258-500?
ST7M258-500 is a O-RING.
What parts can replace ST7M258-500?
There are 12 known substitutes for ST7M258-500: 7600500, 600500, D-9 and 9 more. Substitute compatibility should be verified for your specific system.
Is ST7M258-500 still available?
ST7M258-500 is currently cancelled.
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