CAT Pumps 43249 Buna-N Valve Seat O-Ring 7FR/15FR - 2734
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The Cat Pumps 43249 is a genuine OEM replacement O-ring that seals the valve seats in Cat Pumps 7FR and 15FR plunger pumps. It sits around each valve seat and seals it against the manifold, so water passes only through the valve and can’t bypass it. When this O-ring hardens, flattens, or gets nicked, water can leak past the seat, which typically shows up as pressure loss, a pulsing or uneven spray, and reduced pump efficiency.
The O-ring is made from Buna-N (nitrile) rubber, which resists water, oils, and many common cleaning solutions, and it’s rated to a maximum temperature of 160°F. Since valve seat O-rings are often disturbed when valves are removed, it’s best practice to replace them whenever you service or replace the valves. As a genuine Cat part, it’s built for an exact fit.
Key features:
- Valve seat O-ring for Cat Pumps 7FR and 15FR
- Buna-N (nitrile) rubber
- Max temperature 160°F
- Prevents water from bypassing the valve seat
- Genuine OEM Cat Pumps part for an exact fit