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PartsTable / COMPONENT / 81-2X0-308
81-2X0-308 ✓ 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: 0.3102 INCHES NOMINAL IN, radial_wall_thickness: 0.3024 INCHES MAXIMUM IN, standard_bore_diameter: 8.500 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 4310-00-267-5203, 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
81-2X0-308
NSN: 4310-00-267-5203
FSC: 4310
CAGE: 75370 — KAYDON RING & SEAL INC DBA SKF PRECISION TECHNOLOGIES (USA)
SPECIFICATIONS
materialIRON OVERALL
ring_styleCONCENTRIC
joint_styleVERTICAL JOINT
overall_width0.3102 INCHES NOMINAL IN
radial_wall_thickness0.3024 INCHES MAXIMUM IN
standard_bore_diameter8.500 INCHES IN
cross-sectional_shape_stylePLAIN RECTANGULAR, STRAIGHT FACE
NSN4310-00-267-5203
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RING,PISTON TITLE COMPONENT PN 81-2X0-308 MFR RING,PISTON
KEY FEATURES
•
RING STYLE: CONCENTRIC
•
JOINT STYLE: VERTICAL JOINT
•
STANDARD BORE DIAMETER: 8.500 INCHES IN
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN RECTANGULAR, STRAIGHT FACE
•
RADIAL WALL THICKNESS: 0.3024 INCHES MAXIMUM IN
•
MATERIAL: IRON OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
RING STYLECONCENTRIC
JOINT STYLEVERTICAL JOINT
STANDARD BORE DIAMETER8.500 INCHES IN
CROSS-SECTIONAL SHAPE STYLEPLAIN RECTANGULAR, STRAIGHT FACE
RADIAL WALL THICKNESS0.3024 INCHES MAXIMUM IN
OVERALL WIDTH0.3102 INCHES NOMINAL IN
MATERIALIRON OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
890-4842-001Interchangeable
interchangeable cross-reference
interchangeable
7905193-136Interchangeable
interchangeable cross-reference
interchangeable
91543Interchangeable
interchangeable cross-reference
interchangeable
68530Interchangeable
interchangeable cross-reference
interchangeable
68530AInterchangeable
interchangeable cross-reference
interchangeable
0617-03106Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81-2X0-308?
81-2X0-308 is a RING,PISTON.
What parts can replace 81-2X0-308?
There are 9 known substitutes for 81-2X0-308: 890-4842-001, 7905193-136, 91543 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81-2X0-308?
81-2X0-308 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-267-5203. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026