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Technical Data Sheet
AMS3218 ✓ 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 RUBBER ROUND SECTION is a the manufacturer industrial component. Key specifications include color: BLACK OR BROWN ONE SIDE, material: RUBBER LOCATION NOT OTHERWISE SPECIFIED, temp_rating: -20.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF, special_features: VITON CORD MATERIAL, surface_condition: SMOOTH ONE SIDE, fabrication_method: EXTRUDED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-235-5262, 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
AMS3218
NSN: 5331-00-235-5262
FSC: 5331 — O-RING
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
colorBLACK OR BROWN ONE SIDE
materialRUBBER LOCATION NOT OTHERWISE SPECIFIED
temp_rating-20.0 FAHRENHEIT AND 500.0 FAHRENHEIT DEGF
special_featuresVITON CORD MATERIAL
surface_conditionSMOOTH ONE SIDE
fabrication_methodEXTRUDED
end_item_identificationSUPPORT OF APACHE SAFETY OF FLIGHT MESSAGES
environmental_protectionOIL RESISTANT AND WEATHER RESISTANT
minimum_tensile_strengthERR-060
cross-sectional_shape_styleCIRCULAR
nonmetallic_hardness_rating85.0 MINIMUM SHORE DUROMETER A AND 95.0 MAXIMUM SHORE DUROMETER A
cross_section_outside_diameter0.157 INCHES NOMINAL IN
NSN5331-00-235-5262
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AMS3218 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
ELONGATION PERCENTAGE: 125 MAXIMUM
HARDNESS RATING: 85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
OUTSIDE DIAMETER: 0.629 INCHES NOMINAL IN
MATERIAL: RUBBER FLUOROCARBON CLASS FPM
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23652,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATION: ZZZW
DEPARTURE FROM CITED DOCUMENT: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
TECHNICAL CHARACTERISTICS (FLIS)
ELONGATION PERCENTAGE125 MAXIMUM
HARDNESS RATING85.0 SHORE DUROMETER A MINIMUM AND 95.0 SHORE DUROMETER A MAXIMUM
OUTSIDE DIAMETER0.629 INCHES NOMINAL IN
MATERIALRUBBER FLUOROCARBON CLASS FPM
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23652,TY 2 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONZZZW
DEPARTURE FROM CITED DOCUMENTCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
CENTER HOLE DIAMETER0.484 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
AS3209-116Interchangeable
interchangeable cross-reference
interchangeable
5-0-51-08-3Interchangeable
interchangeable cross-reference
interchangeable
QD1004-116Interchangeable
interchangeable cross-reference
interchangeable
22046-14Interchangeable
interchangeable cross-reference
interchangeable
MILR25897Interchangeable
interchangeable cross-reference
interchangeable
4400173-0140Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AMS3218?
AMS3218 is a RUBBER ROUND SECTION.
What parts can replace AMS3218?
There are 25 known substitutes for AMS3218: AS3209-116, 5-0-51-08-3, QD1004-116 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AMS3218?
AMS3218 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-235-5262. This indicates validated use in U.S. government and defense supply chains.
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