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34HC428 ✓ 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 ESCUTCHEON PLATE is a the manufacturer industrial component. Key specifications include height: 0.530 INCHES NOMINAL IN, diameter: 1.750 INCHES NOMINAL IN, special_features: HOLE DIA 0.682/0.686 IN. IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-085-6840, 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
34HC428
NSN: 5340-01-085-6840
FSC: 5340
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
height0.530 INCHES NOMINAL IN
diameter1.750 INCHES NOMINAL IN
special_featuresHOLE DIA 0.682/0.686 IN. IN
NSN5340-01-085-6840
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 34HC428 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
•
HEIGHT: 0.530 INCHES NOMINAL IN
•
DIAMETER: 1.750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HEIGHT0.530 INCHES NOMINAL IN
DIAMETER1.750 INCHES NOMINAL IN
SPECIAL FEATURESHOLE DIA 0.682/0.686 IN. IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
7042Interchangeable
interchangeable cross-reference
interchangeable
507-4-2Interchangeable
interchangeable cross-reference
interchangeable
871MA0028Interchangeable
interchangeable cross-reference
interchangeable
126-28323-01Interchangeable
interchangeable cross-reference
interchangeable
B145-2INInterchangeable
interchangeable cross-reference
interchangeable
MSS-SP-80Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 34HC428?
34HC428 is a ESCUTCHEON PLATE.
What parts can replace 34HC428?
There are 7 known substitutes for 34HC428: 7042, 507-4-2, 871MA0028 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 34HC428?
34HC428 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-085-6840. 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