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9688K311 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

9688K311: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC POLYAMIDE NYLON, design_type: FRICTION, special_features: SPECIFY COLOR;VENTED;ROCKWELL HARDNESS R113;MAX TEMP 185 DEG F DEGF, end_item_identification: 5820-01-545-6691 AN/MRC-142C RADIO SET, part_name_assigned_by_controlling_agency: PUSH-IN ROUND PLASTIC PLUG, tube_outside_diameter_for_which_designed: 1.180 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-584-9528, 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
9688K311
NSN: 5340-01-584-9528
FSC: 5340 — Hardware, Commercial
CAGE: 0KVE6 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON
design_typeFRICTION
special_featuresSPECIFY COLOR;VENTED;ROCKWELL HARDNESS R113;MAX TEMP 185 DEG F DEGF
end_item_identification5820-01-545-6691 AN/MRC-142C RADIO SET
part_name_assigned_by_controlling_agencyPUSH-IN ROUND PLASTIC PLUG
tube_outside_diameter_for_which_designed1.180 INCHES NOMINAL IN
opening_inside_diameter_for_which_designed1.000 INCHES NOMINAL IN
NSN5340-01-584-9528
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 9688K311 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
•
DESIGN TYPE: FRICTION
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.180 INCHES NOMINAL IN
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 1.000 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.180 INCHES NOMINAL IN
OPENING INSIDE DIAMETER FOR WHICH DESIGNED1.000 INCHES NOMINAL IN
SPECIAL FEATURESSPECIFY COLOR;VENTED;ROCKWELL HARDNESS R113;MAX TEMP 185 DEG F DEGF
PART NAME ASSIGNED BY CONTROLLING AGENCYPUSH-IN ROUND PLASTIC PLUG
END ITEM IDENTIFICATION5820-01-545-6691 AN/MRC-142C RADIO SET
MATERIALPLASTIC POLYAMIDE NYLON
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9688K311?
9688K311 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What is the NSN for 9688K311?
9688K311 is cataloged in the U.S. Government catalog under NSN 5340-01-584-9528. 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.