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PartsTable / COMPONENT / A340193
A340193 ✓ 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 RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, peripheral_diameter: 0.544 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN, center_hole_diameter: 0.395 INCHES MINIMUM AND 0.397 INCHES MAXIMUM IN, cross-sectional_height: 0.269 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN, cross-sectional_thickness: 0.016 INCHES NOMINAL IN, cross-sectional_shape_style: CUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-1955, 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
A340193
NSN: 5330-00-291-1955
FSC: 5330
CAGE: 00000
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
peripheral_diameter0.544 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN
center_hole_diameter0.395 INCHES MINIMUM AND 0.397 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
cross-sectional_thickness0.016 INCHES NOMINAL IN
cross-sectional_shape_styleCUP
NSN5330-00-291-1955
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A340193 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
•
CROSS-SECTIONAL SHAPE STYLE: CUP
•
CENTER HOLE DIAMETER: 0.395 INCHES MINIMUM AND 0.397 INCHES MAXIMUM IN
•
CROSS-SECTIONAL HEIGHT: 0.269 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
•
PERIPHERAL DIAMETER: 0.544 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN
•
CROSS-SECTIONAL THICKNESS: 0.016 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLECUP
CENTER HOLE DIAMETER0.395 INCHES MINIMUM AND 0.397 INCHES MAXIMUM IN
CROSS-SECTIONAL HEIGHT0.269 INCHES MINIMUM AND 0.284 INCHES MAXIMUM IN
PERIPHERAL DIAMETER0.544 INCHES MINIMUM AND 0.546 INCHES MAXIMUM IN
CROSS-SECTIONAL THICKNESS0.016 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
C135Interchangeable
interchangeable cross-reference
interchangeable
135R3HM2Interchangeable
interchangeable cross-reference
interchangeable
231-5031Interchangeable
interchangeable cross-reference
interchangeable
XT11832Interchangeable
interchangeable cross-reference
interchangeable
SM-C-422849Interchangeable
interchangeable cross-reference
interchangeable
121951Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A340193?
A340193 is a RETAINER,PACKING.
What parts can replace A340193?
There are 16 known substitutes for A340193: C135, 135R3HM2, 231-5031 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A340193?
A340193 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-291-1955. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026