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Technical Data Sheet
PartsTable / COMPONENT / 10-644-8-12X
10-644-8-12X ✓ 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-PLUG,PROTECTIVE,DUST AND MOI. Key specifications include material: PLASTIC, length_under_shoulder: 0.687 INCHES NOMINAL IN, open_end_inside_diameter: 0.960 INCHES NOMINAL IN, closed_end_overall_diameter: 0.915 INCHES NOMINAL 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 5340-00-291-3642, 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
10-644-8-12X
NSN: 5340-00-291-3642
FSC: 5340
CAGE: 92003 — PARKER HANNIFIN CORPORATION DIV AEROSPACE GROUP HEADQUARTERS (USA)
SPECIFICATIONS
materialPLASTIC
length_under_shoulder0.687 INCHES NOMINAL IN
open_end_inside_diameter0.960 INCHES NOMINAL IN
closed_end_overall_diameter0.915 INCHES NOMINAL IN
NSN5340-00-291-3642
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 10-644-8-12X 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
•
OPEN END INSIDE DIAMETER: 0.960 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
CLOSED END OVERALL DIAMETER: 0.915 INCHES NOMINAL IN
•
LENGTH UNDER SHOULDER: 0.687 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
OPEN END INSIDE DIAMETER0.960 INCHES NOMINAL IN
MATERIALPLASTIC
CLOSED END OVERALL DIAMETER0.915 INCHES NOMINAL IN
LENGTH UNDER SHOULDER0.687 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
72MCA1Interchangeable
interchangeable cross-reference
interchangeable
62.90.052Interchangeable
interchangeable cross-reference
interchangeable
103028Interchangeable
interchangeable cross-reference
interchangeable
G9Interchangeable
interchangeable cross-reference
interchangeable
12XInterchangeable
interchangeable cross-reference
interchangeable
520828Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10-644-8-12X?
10-644-8-12X is a CAP-PLUG,PROTECTIVE,DUST AND MOI.
What parts can replace 10-644-8-12X?
There are 9 known substitutes for 10-644-8-12X: 72MCA1, 62.90.052, 103028 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10-644-8-12X?
10-644-8-12X is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-291-3642. 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