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Technical Data Sheet

331/33688 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

331/33688: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: RUBBER, design_type: FRICTION, overall_diameter: 52.0 MILLIMETERS NOMINAL MM, special_features: MATERIAL IS 2MM THICK, ITEM IS 6MM TOTAL THICKNESS MM, part_name_assigned_by_controlling_agency: RUBBER BLANK, tube_outside_diameter_for_which_designed: 48.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-669-1086, 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
331/33688
NSN: 5340-01-669-1086
FSC: 5340 — Hardware, Commercial
CAGE: 0JKF0 — JCB INC. (USA)
SPECIFICATIONS
materialRUBBER
design_typeFRICTION
overall_diameter52.0 MILLIMETERS NOMINAL MM
special_featuresMATERIAL IS 2MM THICK, ITEM IS 6MM TOTAL THICKNESS MM
part_name_assigned_by_controlling_agencyRUBBER BLANK
tube_outside_diameter_for_which_designed48.0 MILLIMETERS NOMINAL MM
NSN5340-01-669-1086
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 331/33688 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
•
OVERALL DIAMETER: 52.0 MILLIMETERS NOMINAL MM
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 48.0 MILLIMETERS NOMINAL MM
•
MATERIAL: RUBBER
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER52.0 MILLIMETERS NOMINAL MM
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED48.0 MILLIMETERS NOMINAL MM
SPECIAL FEATURESMATERIAL IS 2MM THICK, ITEM IS 6MM TOTAL THICKNESS MM
PART NAME ASSIGNED BY CONTROLLING AGENCYRUBBER BLANK
MATERIALRUBBER
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
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 331/33688?
331/33688 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What is the NSN for 331/33688?
331/33688 is cataloged in the U.S. Government catalog under NSN 5340-01-669-1086. 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.