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Technical Data Sheet
PartsTable / COMPONENT / 1 1-4C
1 1-4C ✓ 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 PACKING MATERIAL is a the manufacturer industrial component. Key specifications include material: ASBESTOS AND IRON ALLOY, fabrication_method: BRAIDED AND SOLID, cross-sectional_width: 0.250 INCHES NOMINAL IN, cross-sectional_height: 0.250 INCHES NOMINAL IN, cross-sectional_shape_style: SQUARE, nondefinitive_spec/std_data: L TYPE AND 2 CLASS AND 1111 SYMBOL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-276-5834, 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
1 1-4C
NSN: 5340-00-276-5834
FSC: 5340
CAGE: 72741 — DORMAN PRODUCTS, INC. DBA DORMAN (USA)
SPECIFICATIONS
materialASBESTOS AND IRON ALLOY
fabrication_methodBRAIDED AND SOLID
cross-sectional_width0.250 INCHES NOMINAL IN
cross-sectional_height0.250 INCHES NOMINAL IN
cross-sectional_shape_styleSQUARE
nondefinitive_spec/std_dataL TYPE AND 2 CLASS AND 1111 SYMBOL
NSN5340-00-276-5834
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1 1-4C 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
•
STYLE DESIGNATOR: CUP
•
HEIGHT: 0.375 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM
•
OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
MATERIAL THICKNESS: 0.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORCUP
HEIGHT0.375 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM
OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIALSTEEL
MATERIAL THICKNESS0.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
86740PC12Interchangeable
interchangeable cross-reference
interchangeable
187I-1/4IN LBInterchangeable
interchangeable cross-reference
interchangeable
C80009Interchangeable
interchangeable cross-reference
interchangeable
X2289Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1 1-4C?
1 1-4C is a PACKING MATERIAL.
What parts can replace 1 1-4C?
There are 4 known substitutes for 1 1-4C: 86740PC12, 187I-1/4IN LB, C80009 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1 1-4C?
1 1-4C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-276-5834. 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