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1B3918 — SEAL,METALLIC,AIRCRAFT GAS TURBI

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

1B3918: SEAL,METALLIC,AIRCRAFT GAS TURBI.

SEAL,METALLIC,AIRCRAFT GAS TURBI. Key specifications include width: 1.000 INCHES NOMINAL IN, length: 1.000 INCHES NOMINAL IN, material: CELLULOSE FIBER, body_style: STRAIGHT TYPE, body_width: 1.620 INCHES MAXIMUM IN, end_radius: 1.625 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0327, 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
1B3918
NSN: 3110-00-100-0327
NIINs: 001000327, 013901861
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
width1.000 INCHES NOMINAL IN
length1.000 INCHES NOMINAL IN
materialCELLULOSE FIBER
body_styleSTRAIGHT TYPE
body_width1.620 INCHES MAXIMUM IN
end_radius1.625 INCHES NOMINAL IN
body_height2.380 INCHES MAXIMUM IN
body_length1.620 INCHES MAXIMUM IN
overall_width0.415 INCHES NOMINAL IN
terminal_typeCRIMP SINGLE MATING END SINGLE CONTACT GROUPING
inclosure_typeOPEN
overall_height0.670 INCHES NOMINAL IN
NSN3110-00-100-0327
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1B3918 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 9
258802Reference document
Same NSN cross-reference
Reference document — Secondary reference
457221Reference document
Same NSN cross-reference
Reference document — Secondary reference
X552AReference document
Same NSN cross-reference
Reference document — Secondary reference
19270HReference document
Same NSN cross-reference
Reference document — Secondary reference
3028271Reference document
Same NSN cross-reference
Reference document — Secondary reference
4NFG0142Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B3918?
1B3918 is a SEAL,METALLIC,AIRCRAFT GAS TURBI.
What parts can replace 1B3918?
There are 9 known substitutes for 1B3918: 258802, 457221, X552A and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B3918?
1B3918 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0327. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.