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PartsTable / COMPONENT / CD34678N PC 27
CD34678N PC 27 ✓ 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 BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE OR RUBBER BUNA N BODY, body_height: 1.469 INCHES NOMINAL IN, overall_height: 1.469 INCHES NOMINAL IN, mounting_method: COMPRESSION, style_designator: THRU-HOLE, material_thickness: 0.062 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-615-6762, 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
CD34678N PC 27
NSN: 5340-00-615-6762
FSC: 5340
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE OR RUBBER BUNA N BODY
body_height1.469 INCHES NOMINAL IN
overall_height1.469 INCHES NOMINAL IN
mounting_methodCOMPRESSION
style_designatorTHRU-HOLE
material_thickness0.062 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
base_inside_diameter1.875 INCHES NOMINAL IN
fsc_application_dataVALVES,PRESSURE REGULATING
base_outside_diameter2.875 INCHES NOMINAL IN
body_outside_diameter2.000 INCHES NOMINAL IN
opening_inside_diameter0.875 INCHES NOMINAL IN
mounting_device_quantity2
NSN5340-00-615-6762
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: CD34678N PC 27 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: THRU-HOLE
•
MOUNTING METHOD: COMPRESSION
•
BASE INSIDE DIAMETER: 1.875 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.062 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
•
MOUNTING DEVICE QUANTITY: 2
•
MATERIAL: RUBBER CHLOROPRENE OR RUBBER BUNA N BODY
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORTHRU-HOLE
MOUNTING METHODCOMPRESSION
BASE INSIDE DIAMETER1.875 INCHES NOMINAL IN
OPENING INSIDE DIAMETER0.875 INCHES NOMINAL IN
OVERALL HEIGHT1.469 INCHES NOMINAL IN
MATERIAL THICKNESS0.062 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN
MOUNTING DEVICE QUANTITY2
MATERIALRUBBER CHLOROPRENE OR RUBBER BUNA N BODY
BODY OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
BASE OUTSIDE DIAMETER2.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
TA4C75S40Upgraded Successor
successor cross-reference
successor
377-40Upgraded Successor
successor cross-reference
successor
4039CG40Upgraded Successor
successor cross-reference
successor
37740JInterchangeable
interchangeable cross-reference
interchangeable
B94.2-1971 TABLE 5Interchangeable
interchangeable cross-reference
interchangeable
30432Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CD34678N PC 27?
CD34678N PC 27 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace CD34678N PC 27?
There are 14 known substitutes for CD34678N PC 27: TA4C75S40, 377-40, 4039CG40 and 11 more. Substitute compatibility should be verified for your specific system.
Is CD34678N PC 27 still available?
CD34678N PC 27 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026