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Knappco Civacon · Hardware & Fasteners
7342
In stock · ships from Knoxville
This is a Teflon silicone O‑ring that fits the seat of a Knappco 4×3 emergency valve.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
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All confirmed applications for this part number.
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Other applications
The inventory title mentions “sump valve,” but all references indicate this is the seat O‑ring for a Knappco emergency valve, not a sump valve.
Part data verified against 2 catalog sources
Different year, make, or config? Get a confirmation against your truck in under a minute.
It creates a leak‑proof seal when the valve is closed, preventing fuel or vapor loss on gas tank trailers. When the original O‑ring hardens, cracks, or takes a set, replacing it restores the valve’s safe shut‑off function.
Part Number: 7342
O-RING FOR KNAPCO SUMP VALVE
Unit: ea
Dealer: Post Onsite
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