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49128 — ISOLATOR,RADIO FREQUENCY REFLECT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

49128: ISOLATOR,RADIO FREQUENCY REFLECT.

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 part is cataloged in the U.S.

Government catalog 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
NIINs: 002315543, 002858278, 011955402, 015313809
FSC: 5340 — Hardware, Commercial
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
•
OPENING INSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
BODY HEIGHT: 1.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THRU-HOLE
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
MATERIAL: RUBBER SILICONE BODY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.625 INCHES NOMINAL IN
OPENING INSIDE DIAMETER0.375 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
BODY HEIGHT1.188 INCHES NOMINAL IN
STYLE DESIGNATORTHRU-HOLE
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
MATERIALRUBBER SILICONE BODY
SUBSTITUTES & CROSS-REFERENCES 1
617304Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 49128?
49128 is a ISOLATOR,RADIO FREQUENCY REFLECT.
What parts can replace 49128?
There is 1 known substitute for 49128: 617304. Substitute compatibility should be verified for your specific system.
What is the NSN for 49128?
49128 is cataloged in the U.S. Government catalog under NSN 5340-00-231-5543. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.