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Technical Data Sheet
PartsTable / O-RING / 81034-4
81034-4 ✓ 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

The CUP,HYDRAULIC BRAKE CYLINDER is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, width: 6.00 INCHES NOMINAL IN, length: 4.25 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, usage_design: VEHICULAR, body_thickness: 0.06 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-01-006-6913, 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
81034-4
NSN: 5331-01-006-6913
FSC: 5331 — O-RING
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
shapeRECTANGULAR
width6.00 INCHES NOMINAL IN
length4.25 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
usage_designVEHICULAR
body_thickness0.06 INCHES NOMINAL IN
heat_treatmentT-6 SOLUTION HEAT TREATED, ARTIFICALLY AGED
mounting_methodSCREW
securing_device_typeTHREADED FASTENER
mounting_hole_diameterUNABLE TO DECODE
peripheral_shape_styleRECTANGLE, FOUR HOLES
end_item_identification4930-01-517-6942;PUMPING UNIT,CENTRIFUGAL,FUELING-DEFUELI
NSN5331-01-006-6913
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 81034-4 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
•
CROSS-SECTIONAL HEIGHT: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
•
HARDNESS RATING: 70.0 SHORE DUROMETER A NOMINAL
•
ELONGATION PERCENTAGE: 331 MAXIMUM
•
OUTSIDE DIAMETER: 2.480 INCHES MINIMUM AND 2.532 INCHES MAXIMUM IN
•
CENTER HOLE DIAMETER: 2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN
•
TEMP RATING: -30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
•
MATERIAL: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL HEIGHT0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
HARDNESS RATING70.0 SHORE DUROMETER A NOMINAL
ELONGATION PERCENTAGE331 MAXIMUM
OUTSIDE DIAMETER2.480 INCHES MINIMUM AND 2.532 INCHES MAXIMUM IN
CENTER HOLE DIAMETER2.290 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN
TEMP RATING-30.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF
MATERIALRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
AMS7259Interchangeable
interchangeable cross-reference
interchangeable
M83248/2-236Interchangeable
interchangeable cross-reference
interchangeable
AS568-141MIL-P-5516CLASSBInterchangeable
interchangeable cross-reference
interchangeable
AS568-141Interchangeable
interchangeable cross-reference
interchangeable
5867666115Interchangeable
interchangeable cross-reference
interchangeable
SK66-6115Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81034-4?
81034-4 is a CUP,HYDRAULIC BRAKE CYLINDER.
What parts can replace 81034-4?
There are 20 known substitutes for 81034-4: AMS7259, M83248/2-236, AS568-141MIL-P-5516CLASSB and 17 more. Substitute compatibility should be verified for your specific system.
Is 81034-4 still available?
81034-4 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026