PartsTable
Technical Data Sheet
1256-5 ✓ Verified by PartsTable
Sandberg · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

With Sandberg Speak’n Go In-Earset you get great sound in a stylish earset. The cable features a microphone and answer button for incoming calls, so you don't have to take the phone out of your pocket. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-059-8749, 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
1256-5
NSN: 5331-00-059-8749
FSC: 5331 — O-RING
CAGE: 03798 — WESTERBEKE CORPORATION (USA)
SPECIFICATIONS
shapeROUND
length12.000 INCHES NOMINAL IN
materialSTEEL OVERALL
duty_typeCONTINUOUS
point_typeCONVENTIONAL
time_delay2.00 SECONDS NOMINAL FIXED OPERATE TIME
point_angle118.0 DEGREES NOMINAL
shank_styleSTANDARD TAPER W/TANG
current_typeAC OR DC
flute_length10.375 INCHES NOMINAL IN
coil_quantity1
overall_width2.500 INCHES NOMINAL IN
NSN5331-00-059-8749
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1256-5 MFR: Sandberg ⚠ 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
CENTER HOLE DIAMETER: 3.335 INCHES MINIMUM AND 3.365 INCHES MAXIMUM IN
MATERIAL: RUBBER SILICONE CLASS Q
CROSS-SECTIONAL HEIGHT: 0.134 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE DIAMETER3.335 INCHES MINIMUM AND 3.365 INCHES MAXIMUM IN
MATERIALRUBBER SILICONE CLASS Q
CROSS-SECTIONAL HEIGHT0.134 INCHES MINIMUM AND 0.144 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
1256-5-00Interchangeable
interchangeable cross-reference
interchangeable
1256-5Interchangeable
interchangeable cross-reference
interchangeable
613737-5Interchangeable
interchangeable cross-reference
interchangeable
116C3149-9Interchangeable
interchangeable cross-reference
interchangeable
B-85Interchangeable
interchangeable cross-reference
interchangeable
53611Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1256-5?
1256-5 is a RELAY,ELECTROMAGNETIC manufactured by Sandberg.
What parts can replace 1256-5?
There are 8 known substitutes for 1256-5: 1256-5-00, 1256-5, 613737-5 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1256-5?
1256-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5331-00-059-8749. This indicates validated use in U.S. government and defense supply chains.
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