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6566-20-340-2108 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6566-20-340-2108: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER SILICONE BODY, body_height: 1.180 INCHES NOMINAL IN, overall_height: 1.550 INCHES NOMINAL IN, sealing_method: COMPRESSION, mounting_method: COMPRESSION, style_designator: THRU-HOLE, EXPANDABLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-143-5327, 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
6566-20-340-2108
NSN: 5340-01-143-5327
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialRUBBER SILICONE BODY
body_height1.180 INCHES NOMINAL IN
overall_height1.550 INCHES NOMINAL IN
sealing_methodCOMPRESSION
mounting_methodCOMPRESSION
style_designatorTHRU-HOLE, EXPANDABLE
material_thickness0.020 INCHES NOMINAL IN
body_outside_diameter1.660 INCHES NOMINAL IN
opening_inside_diameter0.800 INCHES NOMINAL IN
NSN5340-01-143-5327
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6566-20-340-2108 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
•
SEALING METHOD: COMPRESSION
•
OPENING INSIDE DIAMETER: 0.800 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 1.660 INCHES NOMINAL IN
•
MOUNTING METHOD: COMPRESSION
•
BODY HEIGHT: 1.180 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THRU-HOLE, EXPANDABLE
•
MATERIAL THICKNESS: 0.020 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.550 INCHES NOMINAL IN
SEALING METHODCOMPRESSION
OPENING INSIDE DIAMETER0.800 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.660 INCHES NOMINAL IN
MOUNTING METHODCOMPRESSION
BODY HEIGHT1.180 INCHES NOMINAL IN
STYLE DESIGNATORTHRU-HOLE, EXPANDABLE
MATERIAL THICKNESS0.020 INCHES NOMINAL IN
MATERIALRUBBER SILICONE BODY
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6566-20-340-2108?
6566-20-340-2108 is a BOOT,DUST AND MOISTURE SEAL.
What is the NSN for 6566-20-340-2108?
6566-20-340-2108 is cataloged in the U.S. Government catalog under NSN 5340-01-143-5327. 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.