Easy fix for split boots on plumbing vent flashings

I recently came across a plumbing vent flashing repair device that looked like a cross between a two-piece plumbing vent cap and Darth Vader's helmet.

Vent and chimney boot flashing caulking - Plumbing Inspections

Easy fix for split boots on plumbing vent flashings

REPAIRING A ROOF LEAK PIPE BOOT VENT FLASHING

Before and after photos : r/Roofing

Oatey Retro Master Flash 8 in. x 8 in. Vent Pipe Roof Flashing

Vent Flashing Done Right - Fine Homebuilding

ZipSeal Retrofit Pipe Flashing

Flashers #3 Grey EPDM Flexible Roof Jack Pipe Boot Metal Roofing

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Perma-Boot 1-1/2-in x 11.125-in Plastic Vent and Pipe Flashing in

Vent pipe collar/skirt for vent pipe care and maintenance. The ABS vent pipe allows a simple solution to leaks associated with vent pipes that can

Roof Vent Pipe Collar Repair for 2 in. I.D. Vent Pipe in Black

An easy fix for split boots at plumbing vent flashings

Flash-Tech Vent Pipe Wrap, Single Ply Roofing

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Vent Pipe Flashing at