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Technical Data Sheet
PartsTable / COMPONENT / 634-B 1/2IN AND 3/4IN(SS)
634-B 1/2IN AND 3/4IN(SS) ✓ 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 634-B 1/2IN AND 3/4IN(SS) is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-560-4793, 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
634-B 1/2IN AND 3/4IN(SS)
NSN: 5340-01-560-4793
FSC: 5340
CAGE: 1D9T5 — DOVER FLUID MANAGEMENT, INC. DIV DOVER RESOURCES INC. (USA)
SPECIFICATIONS
Part Number634-B 1/2IN AND 3/4IN(SS)
NSN5340-01-560-4793
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 634-B 1/2IN AND 3/4IN(SS) 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: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING
PART NAME ASSIGNED BY CONTROLLING AGENCYDUST CAP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
A-A-59326/10Interchangeable
interchangeable cross-reference
interchangeable
AA59326/10-2-BInterchangeable
interchangeable cross-reference
interchangeable
634-B-3/4IN-BRInterchangeable
interchangeable cross-reference
interchangeable
4730006406156Interchangeable
interchangeable cross-reference
interchangeable
400-DC-ALInterchangeable
interchangeable cross-reference
interchangeable
C13200E6373Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 634-B 1/2IN AND 3/4IN(SS)?
634-B 1/2IN AND 3/4IN(SS) is a 634-B 1/2IN AND 3/4IN(SS).
What parts can replace 634-B 1/2IN AND 3/4IN(SS)?
There are 17 known substitutes for 634-B 1/2IN AND 3/4IN(SS): A-A-59326/10, AA59326/10-2-B, 634-B-3/4IN-BR and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 634-B 1/2IN AND 3/4IN(SS)?
634-B 1/2IN AND 3/4IN(SS) is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-560-4793. 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