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Technical Data Sheet
B2631 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
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 product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-01-063-8575, 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
B2631
NSN: 4310-01-063-8575
FSC: 4310
CAGE: 75370 — KAYDON RING & SEAL INC DBA SKF PRECISION TECHNOLOGIES (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
NSN4310-01-063-8575
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN B2631 MFR RING,PISTON
KEY FEATURES
JOINT STYLE: VERTICAL JOINT
RADIAL WALL THICKNESS: 0.1500 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B 126 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: IRON OVERALL
CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, STRAIGHT FACE
RING STYLE: CONCENTRIC
STANDARD BORE DIAMETER: 3.756 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
JOINT STYLEVERTICAL JOINT
OVERALL WIDTH0.0780 INCHES NOMINAL IN
RADIAL WALL THICKNESS0.1500 INCHES MINIMUM AND 0.1560 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B 126 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALIRON OVERALL
CROSS-SECTIONAL SHAPE STYLEPLAIN RECTANGULAR, STRAIGHT FACE
RING STYLECONCENTRIC
STANDARD BORE DIAMETER3.756 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
63670Interchangeable
interchangeable cross-reference
interchangeable
25460NInterchangeable
interchangeable cross-reference
interchangeable
N63645Interchangeable
interchangeable cross-reference
interchangeable
25654N PIECE 11Interchangeable
interchangeable cross-reference
interchangeable
63645Interchangeable
interchangeable cross-reference
interchangeable
63671Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B2631?
B2631 is a RING,PISTON.
What parts can replace B2631?
There are 25 known substitutes for B2631: 63670, 25460N, N63645 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B2631?
B2631 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-01-063-8575. This indicates validated use in U.S. government and defense supply chains.
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