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49128 ✓ 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

ISOLATOR,RADIO FREQUENCY REFLECT. Key specifications include material: COPPER ALLOY 510, case_style: SQUARE, seal_width: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN, body_height: 1.188 INCHES NOMINAL IN, overall_height: 1.625 INCHES NOMINAL IN, inside_diameter: 7.000 INCHES MINIMUM AND 7.060 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-231-5543, 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
49128
NSN: 5340-00-231-5543
FSC: 5340
CAGE: 81795 — ALLIANZ SWEEPER COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY 510
case_styleSQUARE
seal_width0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN
body_height1.188 INCHES NOMINAL IN
overall_height1.625 INCHES NOMINAL IN
inside_diameter7.000 INCHES MINIMUM AND 7.060 INCHES MAXIMUM IN
outside_diameter7.940 INCHES MINIMUM AND 8.060 INCHES MAXIMUM IN
special_featuresEND ITEM: OJ-741(P) UYQ FC-4 PROCESSOR GROUP,COMPUTER
style_designatorTHRU-HOLE
overall_thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
material_thickness0.094 INCHES NOMINAL IN
body_outside_diameter2.000 INCHES NOMINAL IN
NSN5340-00-231-5543
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 49128 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
•
MATERIAL: RUBBER SILICONE BODY
•
BODY HEIGHT: 1.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THRU-HOLE
•
BODY OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALRUBBER SILICONE BODY
BODY HEIGHT1.188 INCHES NOMINAL IN
STYLE DESIGNATORTHRU-HOLE
BODY OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
OPENING INSIDE DIAMETER0.375 INCHES NOMINAL IN
OVERALL HEIGHT1.625 INCHES NOMINAL IN
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
49128Interchangeable
interchangeable cross-reference
interchangeable
BB296Interchangeable
interchangeable cross-reference
interchangeable
4311125Interchangeable
interchangeable cross-reference
interchangeable
49128-501Interchangeable
interchangeable cross-reference
interchangeable
617304Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 49128?
49128 is a ISOLATOR,RADIO FREQUENCY REFLECT.
What parts can replace 49128?
There are 5 known substitutes for 49128: 49128, BB296, 4311125 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 49128?
49128 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-231-5543. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026