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Technical Data Sheet
PartsTable / COMPONENT / 10-644-8-2-2
10-644-8-2-2 ✓ 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,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: FRICTION, overall_diameter: 0.625 INCHES NOMINAL IN, inside_diameter_length: 0.375 INCHES NOMINAL IN, round_cap_outside_surface_condition: SMOOTH, tube_outside_diameter_for_which_designed: 0.347 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-982-3876, 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
10-644-8-2-2
NSN: 5340-00-982-3876
FSC: 5340
CAGE: 92003 — PARKER HANNIFIN CORPORATION DIV AEROSPACE GROUP HEADQUARTERS (USA)
SPECIFICATIONS
materialPLASTIC
design_typeFRICTION
overall_diameter0.625 INCHES NOMINAL IN
inside_diameter_length0.375 INCHES NOMINAL IN
round_cap_outside_surface_conditionSMOOTH
tube_outside_diameter_for_which_designed0.347 INCHES NOMINAL IN
NSN5340-00-982-3876
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 10-644-8-2-2 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
•
DESIGN TYPE: FRICTION
•
ROUND CAP OUTSIDE SURFACE CONDITION: SMOOTH
•
MATERIAL: PLASTIC
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.347 INCHES NOMINAL IN
•
INSIDE DIAMETER LENGTH: 0.375 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPEFRICTION
ROUND CAP OUTSIDE SURFACE CONDITIONSMOOTH
MATERIALPLASTIC
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.347 INCHES NOMINAL IN
INSIDE DIAMETER LENGTH0.375 INCHES NOMINAL IN
OVERALL DIAMETER0.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
3038-9012PC4Upgraded Successor
successor cross-reference
successor
4Upgraded Successor
successor cross-reference
successor
6R4Upgraded Successor
successor cross-reference
successor
10-644-8-2Upgraded Successor
successor cross-reference
successor
917955-7Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10-644-8-2-2?
10-644-8-2-2 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 10-644-8-2-2?
There are 5 known substitutes for 10-644-8-2-2: 3038-9012PC4, 4, 6R4 and 2 more. Substitute compatibility should be verified for your specific system.
Is 10-644-8-2-2 still available?
10-644-8-2-2 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