As good as any other
This switch is common to many vehicles, I use them in my '90s TVR which has its wiper motor in a slightly exposed position, making this park switch something that gets a lot of potential exposure to water.
Kind of makes sense that a windscreen wiper part would be quite waterproof, but these often have poorly joined seals on the plastic body.
Anyway, these are no better or worse than any others I've bought (they're all about the same price anyway), instead I have taken to carefully running a line of superglue gel around the seam, and adding a smear of dielectric grease to the plug that goes into this item. Needs must.
Anyway, this item works well when kept dry, so buy with eyes open, expect no better elsewhere, and enjoy wipers that stop where they're supposed to!
Verified purchase: YesCondition: New