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Technical Data Sheet
128131 ✓ 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 BRACKET,MOUNTING is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-449-5470, 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
128131
NSN: 5340-01-449-5470
FSC: 5340
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
Part Number128131
NSN5340-01-449-5470
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 128131 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1878.86Interchangeable
interchangeable cross-reference
interchangeable
MBP-R6-M6Interchangeable
interchangeable cross-reference
interchangeable
128131Interchangeable
interchangeable cross-reference
interchangeable
CMG/128131Interchangeable
Same NIIN cross-reference
interchangeable
CMG184325Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 128131?
128131 is a BRACKET,MOUNTING.
What parts can replace 128131?
There are 5 known substitutes for 128131: 1878.86, MBP-R6-M6, 128131 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 128131?
128131 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-449-5470. This indicates validated use in U.S. government and defense supply chains.
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