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Technical Data Sheet
12205-56 ✓ Verified by PartsTable
3M · ORING SEAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

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This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-460-7001, 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
12205-56
NSN: 5340-01-460-7001
FSC: 5340
CAGE: 83930 — TRANSDIGM INC DBA ADEL WIGGINS GROUP DIV ADEL WIGGINS (USA)
SPECIFICATIONS
materialRUBBER BUTADIENE NITRILE CUSHION
overall_length3.919 INCHES MINIMUM AND 3.949 INCHES MAXIMUM IN
special_features3.500 NOM TUDB OD PAYLOAD; CUSHION COLOR-YELLOW;MANUFACTURER'S DRAWING NAME-CLAMP,LOOP-SADDLE STYLE, REINFORCED, NITRILE CHUSHION
style_designatorSADDLE MOUNT
tongue_hole_typeROUND, UNTHREADED
end_item_identificationC-17A A
material_document_and_classificationMS5528 ASSN STD SINGLE MATERIAL RESPONSE BAND
NSN5340-01-460-7001
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 12205-56 MFR: 3M ⚠ 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
MATERIAL: STEEL COMP 631 BAND
MATERIAL DOCUMENT AND CLASSIFICATION: 9L-C-8502/1 MIL SPEC SINGLE MATERIAL RESPONSE CUSHION
STYLE DESIGNATOR: SADDLE MOUNT
TONGUE HOLE TYPE: ROUND, UNTHREADED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 631 BAND
MATERIAL DOCUMENT AND CLASSIFICATION9L-C-8502/1 MIL SPEC SINGLE MATERIAL RESPONSE CUSHION
STYLE DESIGNATORSADDLE MOUNT
OVERALL LENGTH3.919 INCHES MINIMUM AND 3.949 INCHES MAXIMUM IN
SPECIAL FEATURES3.500 NOM TUDB OD PAYLOAD; CUSHION COLOR-YELLOW;MANUFACTURER'S DRAWING NAME-CLAMP,LOOP-SADDLE STYLE, REINFORCED, NITRILE CHUSHION
TONGUE HOLE TYPEROUND, UNTHREADED
END ITEM IDENTIFICATIONC-17A A
MATERIAL DOCUMENT AND CLASSIFICATIONMS5528 ASSN STD SINGLE MATERIAL RESPONSE BAND
MATERIALRUBBER BUTADIENE NITRILE CUSHION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
XX12206K1105Interchangeable
interchangeable cross-reference
interchangeable
MS27981-3NInterchangeable
interchangeable cross-reference
interchangeable
12206Interchangeable
interchangeable cross-reference
interchangeable
11439Interchangeable
interchangeable cross-reference
interchangeable
2012-T 5Interchangeable
interchangeable cross-reference
interchangeable
B94.11MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12205-56?
12205-56 is a CLAMP,LOOP manufactured by 3M.
What parts can replace 12205-56?
There are 20 known substitutes for 12205-56: XX12206K1105, MS27981-3N, 12206 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12205-56?
12205-56 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-460-7001. This indicates validated use in U.S. government and defense supply chains.
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