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1653375 — PARACHUTE,PERSONNEL,BACK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1653375: PARACHUTE,PERSONNEL,BACK.

The PARACHUTE,PERSONNEL,BACK is a the manufacturer industrial component. Key specifications include fsc_application_data: GASOLINE ENGINE,NONAIRCRAFT, standard_bore_diameter: 3.250 INCHES IN, ring_set_component_parts: COMPRESSION RING,1117982,12204,8; COMPRESSION RING,1328346,12204,8; OIL RING,1238344,12204,8; OIL RING,320051,8. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-132-1156, 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
1653375
NSN: 5340-00-132-1156
NIINs: 001321156, 003775092
FSC: 5340 — Hardware, Commercial
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
fsc_application_dataGASOLINE ENGINE,NONAIRCRAFT
standard_bore_diameter3.250 INCHES IN
ring_set_component_partsCOMPRESSION RING,1117982,12204,8; COMPRESSION RING,1328346,12204,8; OIL RING,1238344,12204,8; OIL RING,320051,8
piston_accommodation_quantity8
NSN5340-00-132-1156
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1653375 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
•
PLATE STYLE: RECTANGULAR
•
TREAD WIDTH: 2.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SWIVEL OFFSET
•
CASTER PLATE MOUNTING HOLE DIAMETER: 0.391 INCHES NOMINAL IN
•
CASTER PLATE WIDTH: 4.000 INCHES NOMINAL IN
•
CASTER PLATE LENGTH: 7.000 INCHES NOMINAL IN
•
WHEEL QUANTITY: 1
•
EFFECTIVE HEIGHT: 8.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
PLATE STYLERECTANGULAR
TREAD WIDTH2.000 INCHES NOMINAL IN
STYLE DESIGNATORSWIVEL OFFSET
CASTER PLATE MOUNTING HOLE DIAMETER0.391 INCHES NOMINAL IN
CASTER PLATE WIDTH4.000 INCHES NOMINAL IN
CASTER PLATE LENGTH7.000 INCHES NOMINAL IN
WHEEL QUANTITY1
EFFECTIVE HEIGHT8.562 INCHES NOMINAL IN
SAFE OPERATING LOAD RATING190.0 POUNDS MINIMUM AND 430.0 POUNDS MAXIMUM LBS
CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH6.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
4LAB-TBDN-T-SD-SLSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4LA8-TBDN 4 POSITION SWIVEL LOCKReference document
Same NSN cross-reference
Reference document — Secondary reference
4LA8-TBDN-T-W-4SLReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1653375?
1653375 is a PARACHUTE,PERSONNEL,BACK.
What parts can replace 1653375?
There are 3 known substitutes for 1653375: 4LAB-TBDN-T-SD-SL, 4LA8-TBDN 4 POSITION SWIVEL LOCK, 4LA8-TBDN-T-W-4SL. Substitute compatibility should be verified for your specific system.
What is the NSN for 1653375?
1653375 is cataloged in the U.S. Government catalog under NSN 5340-00-132-1156. 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.