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HydraMaster Boxxer 421 — item 3
Unlike fogging and ozone treatments
When this kit is used in a PT021 regulator
Two are required per engine — the FD620D is a V-twin
O-Ring Pump Seal AS14 & AS16 Base UOM:EACH HydraMaster Boxxer 421 — itemProduct Overview The pump seal O ring for the Hydro Force AS14 and AS16 pump up sprayers. It is a common part across both the Budget Commercial and TCBS 3 gallon machines, which is why it appears in both parts lists. Important Material Not Specified This is the one seal in the Hydro Force pump up range where the manufacturer does not state the elastomer. Its siblings are marketed as Viton; this one is not described either way. We have since put this
