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Technical Data Sheet
PartsTable / O-RING / 74453421003
74453421003 ✓ 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 material: RUBBER SILICONE CLASS Q, temp_rating: -65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF, hardness_rating: 70.0 SHORE DUROMETER A NOMINAL, outside_diameter: 0.166 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN, center_hole_diameter: 0.053 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN, elongation_percentage: 125 MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-279-9119, 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
74453421003
NSN: 5331-00-279-9119
FSC: 5331 — O-RING
CAGE: 89944 — ELBITAMERICA, INC. (USA)
SPECIFICATIONS
materialRUBBER SILICONE CLASS Q
temp_rating-65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
hardness_rating70.0 SHORE DUROMETER A NOMINAL
outside_diameter0.166 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
center_hole_diameter0.053 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN
elongation_percentage125 MAXIMUM
cross-sectional_height0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
NSN5331-00-279-9119
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 74453421003 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 AND 450.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER SILICONE CLASS Q
•
CENTER HOLE DIAMETER: 0.053 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.166 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
•
ELONGATION PERCENTAGE: 125 MAXIMUM
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING-65.0 FAHRENHEIT AND 450.0 FAHRENHEIT DEGF
MATERIALRUBBER SILICONE CLASS Q
CENTER HOLE DIAMETER0.053 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.166 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
ELONGATION PERCENTAGE125 MAXIMUM
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
AS568-902Interchangeable
interchangeable cross-reference
interchangeable
TR-RG30Interchangeable
interchangeable cross-reference
interchangeable
AS568-902AMS3304Interchangeable
interchangeable cross-reference
interchangeable
AS3582-029Interchangeable
interchangeable cross-reference
interchangeable
2-029 S604-70Interchangeable
interchangeable cross-reference
interchangeable
MS-9068-029Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 74453421003?
74453421003 is a O-RING.
What parts can replace 74453421003?
There are 24 known substitutes for 74453421003: AS568-902, TR-RG30, AS568-902AMS3304 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 74453421003?
74453421003 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-279-9119. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026