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Post Onsite · Hardware & Fasteners
408061
In stock · ships from Knoxville
This is a Viton (FKM) O-ring used primarily in bottom‑loading couplers and vapor‑recovery adapters on petroleum tanker trucks.
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Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Fits many brands of bottom‑loading couplers such as Knappco, Nuseal, Emco Wheaton, and others that comply with API RP 1004. Not a chassis or engine part — it belongs to the tank‑truck loading equipment.
Part data verified against 4 catalog sources
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It seals the connection between the loading arm and the truck’s adapter to prevent fuel spills during bulk transfer. Replace it when you see cracks, swelling, or fuel weeping from a coupler, or as part of scheduled hose‑end and coupler maintenance.
Part Number: 408061
O-RING
Unit: ea
Dealer: Post Onsite
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