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Technical Data Sheet
PartsTable / O-RING / AMS 3303
AMS 3303 ✓ 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

NONMETALLIC SPECIAL SHAPED SECTI. Key specifications include width: 36.000 INCHES NOMINAL IN, length: 36.000 INCHES NOMINAL IN, material: RUBBER SILICONE CLASS Q, thickness: 0.250 INCHES NOMINAL IN, temp_rating: 225.0 CELSIUS DEGC, inside_radius: 0.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-047-3862, 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
AMS 3303
NSN: 5331-00-047-3862
FSC: 5331 — O-RING
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
width36.000 INCHES NOMINAL IN
length36.000 INCHES NOMINAL IN
materialRUBBER SILICONE CLASS Q
thickness0.250 INCHES NOMINAL IN
temp_rating225.0 CELSIUS DEGC
inside_radius0.125 INCHES NOMINAL IN
overall_width0.750 INCHES NOMINAL IN
outside_radius0.188 INCHES NOMINAL IN
special_featuresNATURAL SMOOTH FINISH
surface_conditionSMOOTH BOTH SIDES
fabrication_methodSOLID
cross-sectional_width0.250 INCHES NOMINAL IN
NSN5331-00-047-3862
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AMS 3303 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
•
MATERIAL: RUBBER SILICONE CLASS Q
•
CENTER HOLE DIAMETER: 0.421 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
•
HARDNESS RATING: 50.0 SHORE DUROMETER A NOMINAL
•
CROSS-SECTIONAL HEIGHT: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
•
TEMP RATING: -85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SILICONE CLASS Q
CENTER HOLE DIAMETER0.421 INCHES MINIMUM AND 0.431 INCHES MAXIMUM IN
HARDNESS RATING50.0 SHORE DUROMETER A NOMINAL
CROSS-SECTIONAL HEIGHT0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
TEMP RATING-85.0 FAHRENHEIT AND 401.0 FAHRENHEIT DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
AMS3303Interchangeable
interchangeable cross-reference
interchangeable
AS568-908Interchangeable
interchangeable cross-reference
interchangeable
MS9393-06Interchangeable
interchangeable cross-reference
interchangeable
ZZ-R-765Interchangeable
interchangeable cross-reference
interchangeable
M83248/1-011Interchangeable
interchangeable cross-reference
interchangeable
10017039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AMS 3303?
AMS 3303 is a NONMETALLIC SPECIAL SHAPED SECTI.
What parts can replace AMS 3303?
There are 27 known substitutes for AMS 3303: AMS3303, AS568-908, MS9393-06 and 24 more. Substitute compatibility should be verified for your specific system.
Is AMS 3303 still available?
AMS 3303 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026