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143740 — SPRING,HELICAL,COMPRESSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

143740: SPRING,HELICAL,COMPRESSION.

The SPRING,HELICAL,COMPRESSION is a the manufacturer industrial component. Key specifications include diameter: 4.000 INCHES NOMINAL IN, material: PLASTIC POLYURETHANE CUSHIONING, thickness: 0.380 INCHES NOMINAL IN, special_features: 2.750 IN. ID IN.

This part is cataloged in the U.S. Government catalog under NSN 5340-01-142-1696, 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
143740
NSN: 5340-01-142-1696
NIINs: 011421696, 011962436
FSC: 5340 — Hardware, Commercial
CAGE: 21877 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
diameter4.000 INCHES NOMINAL IN
materialPLASTIC POLYURETHANE CUSHIONING
thickness0.380 INCHES NOMINAL IN
special_features2.750 IN. ID IN
NSN5340-01-142-1696
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 143740 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
•
DIAMETER: 4.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYURETHANE CUSHIONING
•
THICKNESS: 0.380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DIAMETER4.000 INCHES NOMINAL IN
SPECIAL FEATURES2.750 IN. ID IN
MATERIALPLASTIC POLYURETHANE CUSHIONING
THICKNESS0.380 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 143740?
143740 is a SPRING,HELICAL,COMPRESSION.
What is the NSN for 143740?
143740 is cataloged in the U.S. Government catalog under NSN 5340-01-142-1696. This indicates validated use in U.S. government and defense supply chains.
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