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Technical Data Sheet
N351CD170 ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: THREADED, thread_class: 2B, overall_diameter: 1.562 INCHES NOMINAL IN, special_features: COLOR-BLACK, round_cap_outside_surface_condition: SERRATED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-497-4296, 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
N351CD170
NSN: 5340-00-497-4296
FSC: 5340
CAGE: F2521 — BIO-RAD (FRA)
SPECIFICATIONS
materialPLASTIC
design_typeTHREADED
thread_class2B
overall_diameter1.562 INCHES NOMINAL IN
special_featuresCOLOR-BLACK
round_cap_outside_surface_conditionSERRATED
thread_size_and_series/type_designator1-3/8-18 UNEF
NSN5340-00-497-4296
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: N351CD170 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
THREAD CLASS: 2B
MATERIAL: PLASTIC
OVERALL DIAMETER: 1.562 INCHES NOMINAL IN
DESIGN TYPE: THREADED
ROUND CAP OUTSIDE SURFACE CONDITION: SERRATED
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1-3/8-18 UNEF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2B
SPECIAL FEATURESCOLOR-BLACK
MATERIALPLASTIC
OVERALL DIAMETER1.562 INCHES NOMINAL IN
DESIGN TYPETHREADED
ROUND CAP OUTSIDE SURFACE CONDITIONSERRATED
THREAD SIZE AND SERIES/TYPE DESIGNATOR1-3/8-18 UNEF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
YC4-15Upgraded Successor
successor cross-reference
successor
5340PL0846281Upgraded Successor
successor cross-reference
successor
910250-17Upgraded Successor
successor cross-reference
successor
SP807-172-11Interchangeable
interchangeable cross-reference
interchangeable
MS35043-190Interchangeable
interchangeable cross-reference
interchangeable
RCR20G206JPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N351CD170?
N351CD170 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace N351CD170?
There are 15 known substitutes for N351CD170: YC4-15, 5340PL0846281, 910250-17 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N351CD170?
N351CD170 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-497-4296. This indicates validated use in U.S. government and defense supply chains.
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