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9557K203 — O-RING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

9557K203: O-RING.

The O-RING is a the manufacturer industrial component. Key specifications include material: PLASTIC FLUORINATED ETHYLENE PROPYLENE, temp_rating: -65.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, special_features: TEMPERATURE RANGE M65 DEG F TP 212 DEG F; OD-6.693 IN IN, center_hole_diameter: 6.500 INCHES NOMINAL IN, cross-sectional_height: 0.094 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5331-01-573-7779, 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
9557K203
NSN: 5331-01-573-7779
FSC: 5331 — O-ring
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC FLUORINATED ETHYLENE PROPYLENE
temp_rating-65.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
special_featuresTEMPERATURE RANGE M65 DEG F TP 212 DEG F; OD-6.693 IN IN
center_hole_diameter6.500 INCHES NOMINAL IN
cross-sectional_height0.094 INCHES NOMINAL IN
end_item_identificationA-MGS-STRYKER
material_document_and_classificationASTM D2000/SAE J200 ASSN STD SINGLE MATERIAL RESPONSE
NSN5331-01-573-7779
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9557K203 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: -65.0 FAHRENHEIT DEGF
•
CROSS-SECTIONAL HEIGHT: 0.094 INCHES NOMINAL IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D2000/SAE J200 ASSN STD SINGLE MATERIAL RESPONSE
•
COLOR: BLACK
•
CENTER HOLE DIAMETER: 6.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
TEMP RATING-65.0 FAHRENHEIT DEGF
CROSS-SECTIONAL HEIGHT0.094 INCHES NOMINAL IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D2000/SAE J200 ASSN STD SINGLE MATERIAL RESPONSE
COLORBLACK
SPECIAL FEATURESTEMPERATURE RANGE M65 DEG F TP 212 DEG F; OD-6.693 IN IN
CENTER HOLE DIAMETER6.500 INCHES NOMINAL IN
END ITEM IDENTIFICATIONA-MGS-STRYKER
MATERIALPLASTIC FLUORINATED ETHYLENE PROPYLENE
SUBSTITUTES & CROSS-REFERENCES 1
AS568A-165Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9557K203?
9557K203 is a O-RING.
What parts can replace 9557K203?
There is 1 known substitute for 9557K203: AS568A-165. Substitute compatibility should be verified for your specific system.
What is the NSN for 9557K203?
9557K203 is cataloged in the U.S. Government catalog under NSN 5331-01-573-7779. This indicates validated use in U.S. government and defense supply chains.
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