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2272539 — CUP,COMPRESSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

2272539: CUP,COMPRESSION.

The CUP,COMPRESSION is a the manufacturer industrial component. Key specifications include material: LEATHER OVERALL, overall_length: 0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN, overall_diameter: 4.530 INCHES NOMINAL IN, center_hole_diameter: 3.250 INCHES NOMINAL IN, fsc_application_data: HYDRAULIC BRAKE CYLINDER,AUTOMOTIVE, base_material_thickness: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-264-0836, 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
2272539
NSN: 5340-00-264-0836
FSC: 5340 — Hardware, Commercial
CAGE: 23862 — MILITARY VEHICLES OPN GENERAL MOTORS TRUCK AND BUS GROUP MS 2603-02 (USA)
SPECIFICATIONS
materialLEATHER OVERALL
overall_length0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
overall_diameter4.530 INCHES NOMINAL IN
center_hole_diameter3.250 INCHES NOMINAL IN
fsc_application_dataHYDRAULIC BRAKE CYLINDER,AUTOMOTIVE
base_material_thickness0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
recess_major_inside_diameter4.280 INCHES NOMINAL IN
NSN5340-00-264-0836
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2272539 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
•
FSC APPLICATION DATA: HYDRAULIC BRAKE CYLINDER,AUTOMOTIVE
•
OVERALL DIAMETER: 4.530 INCHES NOMINAL IN
•
RECESS MAJOR INSIDE DIAMETER: 4.280 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 3.250 INCHES NOMINAL IN
•
BASE MATERIAL THICKNESS: 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
MATERIAL: LEATHER OVERALL
TECHNICAL CHARACTERISTICS
FSC APPLICATION DATAHYDRAULIC BRAKE CYLINDER,AUTOMOTIVE
OVERALL DIAMETER4.530 INCHES NOMINAL IN
OVERALL LENGTH0.562 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
RECESS MAJOR INSIDE DIAMETER4.280 INCHES NOMINAL IN
CENTER HOLE DIAMETER3.250 INCHES NOMINAL IN
END ITEM IDENTIFICATIONW/S:TRUCK, CARGO, DROPSIDE, 5-TON, 6X6 (M813A1, M-923, M-925); LOADER SCOOP; INFANTRY CARRIER; TRUCK, CARGO, 5-TON, 6X6, XLWB W/E; TRUCK, DUMP, 5-TON, 6X6 (M929, M930); TRUCK, CARGO, DROPSIDE, XLWB, 5-TON, 6X6 (M814, M927, M928); SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE); NIMITZ CLASS CVN; FORRESTAL CLASS CV; TRUCK, TRACTOR, 5-TON (M818, M931)
BASE MATERIAL THICKNESS0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
MATERIALLEATHER OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
375686Reference document
Same NSN cross-reference
Reference document — Secondary reference
2292539Reference document
Same NSN cross-reference
Reference document — Secondary reference
132952Reference document
Same NSN cross-reference
Reference document — Secondary reference
KC8943Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2272539?
2272539 is a CUP,COMPRESSION.
What parts can replace 2272539?
There are 4 known substitutes for 2272539: 375686, 2292539, 132952 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2272539?
2272539 is cataloged in the U.S. Government catalog under NSN 5340-00-264-0836. 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.