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Betts Industries · Hardware & Fasteners
18098TS
In stock · ships from Knoxville
This is a Tef-Sil O-ring designed for the 4-inch emergency valve (often called a belly valve) on tank trailers, particularly those hauling petroleum, chemicals, or dry bulk.
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Verified fitment for 3 applications
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All confirmed applications for this part number.
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Specifically identified as item #7 (Seat O-Ring) in Betts emergency valve diagrams. Commonly used in gas trailers and other tank trailers requiring a 4-inch emergency valve seal.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 5 of 5.
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It serves as the main seat seal, ensuring a liquid-tight closure when the valve is closed to prevent product loss during transport. You would replace this O-ring when the valve starts leaking or during routine rebuilds, typically as part of a repair kit, and it’s critical to use a material like Tef-Sil that is compatible with the specific cargo being carried.
Part Number: 18098TS
4 BELLYVALVE ORING
Unit: ea
Dealer: Post Onsite
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