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Technical Data Sheet
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63670 ✓ Verified by PartsTable
— · MOTOR
WHAT YOU NEED TO KNOW
NEMA frame determines mounting bolt pattern TEFC for outdoor, ODP for dry indoor only
C-face vs foot-mount — different mounting
PRODUCT OVERVIEW

The RING,PISTON is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, ring_style: CONCENTRIC, joint_style: VERTICAL JOINT, overall_width: 0.0780 INCHES NOMINAL IN, radial_wall_thickness: 0.1500 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN, standard_bore_diameter: 3.756 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6105-00-195-9673, 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
63670
NSN: 6105-00-195-9673
FSC: 6105
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialIRON OVERALL
ring_styleCONCENTRIC
joint_styleVERTICAL JOINT
overall_width0.0780 INCHES NOMINAL IN
radial_wall_thickness0.1500 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN
standard_bore_diameter3.756 INCHES IN
cross-sectional_shape_stylePLAIN RECTANGULAR, STRAIGHT FACE
material_document_and_classificationASTM B 126 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN6105-00-195-9673
COMPONENT DIAGRAM
ELECTRIC MOTOR — FRAME SIZE = MOUNTING PATTERN SHAFT J-BOX MOUNTING FEET — FRAME — — · — RPM — · — PN: 63670 · OEM ⚠ VERIFY BEFORE ORDERING NEMA frame size determines mounting bolt pattern — not interchangeable. 56C ≠ 143T bolt pattern. C-face vs foot-mount vs flange — different mounting, same HP doesn't mean drop-in ✓ BROKER TIP TEFC = outdoor/washdown OK. ODP = dry indoor only. TENV = no external fan, explosion-proof areas. 1750 RPM = 4-pole (most common), 3450 RPM = 2-pole, 1150 RPM = 6-pole PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
25654NInterchangeable
interchangeable cross-reference
interchangeable
B2631Interchangeable
interchangeable cross-reference
interchangeable
N63670Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 63670?
63670 is a RING,PISTON.
What parts can replace 63670?
There are 3 known substitutes for 63670: 25654N, B2631, N63670. Substitute compatibility should be verified for your specific system.
Is 63670 still available?
63670 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