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E1780PC27 — CUP,COMPRESSION

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

E1780PC27: CUP,COMPRESSION.

The CUP,COMPRESSION is a the manufacturer industrial component. Key specifications include material: LEATHER OVERALL, overall_length: 0.375 INCHES NOMINAL IN, overall_diameter: 0.938 INCHES NOMINAL IN, center_hole_diameter: 0.375 INCHES NOMINAL IN, recess_inside_diameter: 0.688 INCHES NOMINAL IN, base_material_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-952-4693, 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
E1780PC27
NSN: 5340-00-952-4693
FSC: 5340 — Hardware, Commercial
CAGE: 53154 — PORTLAND VALVE LLC (USA)
SPECIFICATIONS
materialLEATHER OVERALL
overall_length0.375 INCHES NOMINAL IN
overall_diameter0.938 INCHES NOMINAL IN
center_hole_diameter0.375 INCHES NOMINAL IN
recess_inside_diameter0.688 INCHES NOMINAL IN
base_material_thickness0.125 INCHES NOMINAL IN
recess_major_inside_diameter0.688 INCHES NOMINAL IN
NSN5340-00-952-4693
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: E1780PC27 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
•
OVERALL DIAMETER: 0.938 INCHES NOMINAL IN
•
RECESS MAJOR INSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.375 INCHES NOMINAL IN
•
BASE MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
MATERIAL: LEATHER OVERALL
•
RECESS INSIDE DIAMETER: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.938 INCHES NOMINAL IN
OVERALL LENGTH0.375 INCHES NOMINAL IN
RECESS MAJOR INSIDE DIAMETER0.688 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.375 INCHES NOMINAL IN
BASE MATERIAL THICKNESS0.125 INCHES NOMINAL IN
MATERIALLEATHER OVERALL
RECESS INSIDE DIAMETER0.688 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is E1780PC27?
E1780PC27 is a CUP,COMPRESSION.
What is the NSN for E1780PC27?
E1780PC27 is cataloged in the U.S. Government catalog under NSN 5340-00-952-4693. 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.