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755S — PLUG,EXPANSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

755S: PLUG,EXPANSION.

The PLUG,EXPANSION is a the manufacturer industrial component. Key specifications include radius: 4.750 INCHES NOMINAL IN, material: STEEL COMP 1010, outside_diameter: 2.875 INCHES NOMINAL IN, style_designator: CONCAVE, material_thickness: 0.083 INCHES NOMINAL IN, material_document_and_classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-054-1421, 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
755S
NSN: 5340-00-054-1421
FSC: 5340 — Hardware, Commercial
CAGE: 90346 — GIBSON MFG CORP (USA)
SPECIFICATIONS
radius4.750 INCHES NOMINAL IN
materialSTEEL COMP 1010
outside_diameter2.875 INCHES NOMINAL IN
style_designatorCONCAVE
material_thickness0.083 INCHES NOMINAL IN
material_document_and_classificationASTM A108 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-00-054-1421
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 755S 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
•
RADIUS: 4.750 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CONCAVE
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE
•
MATERIAL THICKNESS: 0.083 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1010
TECHNICAL CHARACTERISTICS
RADIUS4.750 INCHES NOMINAL IN
OUTSIDE DIAMETER2.875 INCHES NOMINAL IN
STYLE DESIGNATORCONCAVE
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A108 ASSN STD SINGLE MATERIAL RESPONSE
MATERIAL THICKNESS0.083 INCHES NOMINAL IN
MATERIALSTEEL COMP 1010
SUBSTITUTES & CROSS-REFERENCES 2
40205Reference document
Same NSN cross-reference
Reference document — Secondary reference
172642Reference 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 755S?
755S is a PLUG,EXPANSION.
What parts can replace 755S?
There are 2 known substitutes for 755S: 40205, 172642. Substitute compatibility should be verified for your specific system.
What is the NSN for 755S?
755S is cataloged in the U.S. Government catalog under NSN 5340-00-054-1421. This indicates validated use in U.S. government and defense supply chains.
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