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R67721 — PLUG,PROTECTIVE,DUST AND MOISTUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

R67721: PLUG,PROTECTIVE,DUST AND MOISTUR.

PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE, design_type: FRICTION, overall_diameter: 56.0 MILLIMETERS NOMINAL MM, opening_inside_diameter_for_which_designed: 44.92 MILLIMETERS MINIMUM AND 45.68 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-422-9999, 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
R67721
NSN: 5340-01-422-9999
FSC: 5340 — Hardware, Commercial
CAGE: 75160 — DEERE & CO (USA)
SPECIFICATIONS
materialPLASTIC POLYHEXAMETHYLENE ADIPAMIDE
design_typeFRICTION
overall_diameter56.0 MILLIMETERS NOMINAL MM
opening_inside_diameter_for_which_designed44.92 MILLIMETERS MINIMUM AND 45.68 MILLIMETERS MAXIMUM MM
NSN5340-01-422-9999
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: R67721 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: 56.0 MILLIMETERS NOMINAL MM
•
OPENING INSIDE DIAMETER FOR WHICH DESIGNED: 44.92 MILLIMETERS MINIMUM AND 45.68 MILLIMETERS MAXIMUM MM
•
MATERIAL: PLASTIC POLYHEXAMETHYLENE ADIPAMIDE
TECHNICAL CHARACTERISTICS
DESIGN TYPEFRICTION
OVERALL DIAMETER56.0 MILLIMETERS NOMINAL MM
OPENING INSIDE DIAMETER FOR WHICH DESIGNED44.92 MILLIMETERS MINIMUM AND 45.68 MILLIMETERS MAXIMUM MM
MATERIALPLASTIC POLYHEXAMETHYLENE ADIPAMIDE
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 R67721?
R67721 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What is the NSN for R67721?
R67721 is cataloged in the U.S. Government catalog under NSN 5340-01-422-9999. 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.