PartsTable
Technical Data Sheet
81865-2 ✓ Verified by PartsTable
· BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE BODY, dome_height: 0.500 INCHES NOMINAL IN, corner_shape: SQUARE ALL CORNERS, thread_class: 2B, thread_series: UNS, overall_height: 0.719 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 3120-00-689-7779, 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
81865-2
NSN: 3120-00-689-7779
FSC: 3120
CAGE: 02708 — AGE LOGISTICS CORPORATION (USA)
SPECIFICATIONS
materialRUBBER SILICONE BODY
dome_height0.500 INCHES NOMINAL IN
corner_shapeSQUARE ALL CORNERS
thread_class2B
thread_seriesUNS
overall_height0.719 INCHES NOMINAL IN
overall_length1.4000 INCHES NOMINAL IN
sealing_methodMECHANICAL
surface_finish32.0 MICROINCHES INTERMEDIATE LAYER
mounting_methodINTEGRAL THREADED NUT
style_designatorCLOSED END
features_providedCASEHARDENED
NSN3120-00-689-7779
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 81865-2 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
MATERIAL: STEEL OVERALL
FEATURES PROVIDED: CASEHARDENED
BODY OUTSIDE DIAMETER: 1.2470 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPE: SQUARE ALL CORNERS
BODY INSIDE DIAMETER: 0.9350 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM IN
SURFACE FINISH: 32.0 MICROINCHES INTERMEDIATE LAYER
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
FEATURES PROVIDEDCASEHARDENED
BODY OUTSIDE DIAMETER1.2470 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
CORNER SHAPESQUARE ALL CORNERS
BODY INSIDE DIAMETER0.9350 INCHES MINIMUM AND 0.9380 INCHES MAXIMUM IN
OVERALL LENGTH1.4000 INCHES NOMINAL IN
SURFACE FINISH32.0 MICROINCHES INTERMEDIATE LAYER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
81865-2Interchangeable
interchangeable cross-reference
interchangeable
NC3030RF1-2513Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81865-2?
81865-2 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace 81865-2?
There are 2 known substitutes for 81865-2: 81865-2, NC3030RF1-2513. Substitute compatibility should be verified for your specific system.
What is the NSN for 81865-2?
81865-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-689-7779. This indicates validated use in U.S. government and defense supply chains.
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