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Technical Data Sheet
53-646 ✓ 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 CONNECTOR SET,ELECTRICAL is a the manufacturer industrial component. Key specifications include material: PLASTIC TETRAFLUOROETHYLENE OVERALL, hole_diameter: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, terminal_type: WIRE LEAD, component_name: ADAPTER,CONNECTOR; CONNECTOR,PLUG,ELECTRICAL, overall_length: 4.800 INCHES NOMINAL IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-171-8067, 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
53-646
NSN: 5330-00-171-8067
FSC: 5330
CAGE: 01317 — FYR-FYTER CO INC (USA)
SPECIFICATIONS
materialPLASTIC TETRAFLUOROETHYLENE OVERALL
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
terminal_typeWIRE LEAD
component_nameADAPTER,CONNECTOR; CONNECTOR,PLUG,ELECTRICAL
overall_length4.800 INCHES NOMINAL IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
inside_diameter1.745 INCHES NOMINAL IN
outside_diameter0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
overall_diameter2.745 INCHES NOMINAL IN
special_featuresTWO BUTTONS,INTERLOCKED,INDICATING PLATE,GASKET,MTG HARDWARE,DRIP PROOF
style_designatorFLAT EXTERNAL TEETH
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5330-00-171-8067
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 53-646 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
PERIPHERAL DIAMETER: 1.125 INCHES NOMINAL IN
MATERIAL: LEATHER OVERALL
CROSS-SECTIONAL SHAPE STYLE: FLANGE
FLANGED BODY OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
CENTER HOLE DIAMETER: 0.500 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL DIAMETER1.125 INCHES NOMINAL IN
MATERIALLEATHER OVERALL
CROSS-SECTIONAL SHAPE STYLEFLANGE
FLANGED BODY OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.500 INCHES NOMINAL IN
CROSS-SECTIONAL HEIGHT0.562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MS35335-32Interchangeable
interchangeable cross-reference
interchangeable
656193Interchangeable
interchangeable cross-reference
interchangeable
138479Interchangeable
interchangeable cross-reference
interchangeable
53646Interchangeable
interchangeable cross-reference
interchangeable
053-0646-0001Interchangeable
interchangeable cross-reference
interchangeable
54310524Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 53-646?
53-646 is a CONNECTOR SET,ELECTRICAL.
What parts can replace 53-646?
There are 10 known substitutes for 53-646: MS35335-32, 656193, 138479 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 53-646?
53-646 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5330-00-171-8067. This indicates validated use in U.S. government and defense supply chains.
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