Skip to content
Wil-Mar Rubber Pipe Collar for Roof Boots, Black, 1-1/2, 3 and 4 in. Sizes
Regular price $7.75Orders start at $399 — combine any items to reach the minimum. Learn more
Wil-Mar Rubber Pipe Collar for Roof Boots, Black, 1-1/2, 3 and 4 in. Sizes
The Wil Mar Pipe Collar is a black rubber insert that seals the gap between a vent pipe and a roof boot flashing. Offered in 1-1/2 in., 3 in. and 4 in. pipe sizes, each collar is sold per piece. It pairs with pipe-base flashing to reduce water intrusion at the penetration.
Key Features:
- Black rubber build: Durable black rubber collar conforms around the pipe for a snug fit.
- Three sizes: Available in 1-1/2 in., 3 in. and 4 in. pipe sizes (PC150, PC300, PC400).
- Boot insert: Sits inside the boot opening to close the gap around the pipe.
- Weather sealing: Helps keep water from running down the stack inside the flashing.
- Per-piece ordering: Each collar is sold individually to match a specific pipe diameter.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Wil-Mar |
| Sell unit | 1 piece |
| Material | Rubber |
| Product line | Wil Mar Pipe Collar |
| Available colors | Black |
| Available sizes | 1-1/2 in. (#PC150), 3 in. (#PC300), 4 in. (#PC400) |
| Type | Roof boot pipe collar |
| Intended use | Sealing the gap between vent pipe and boot flashing |
Coverage & How Much You Need:
One collar covers one vent pipe; match the collar diameter to the pipe outside diameter and order one per penetration.
Fit and Compatibility:
Fits inside roof boot flashings sized for the matching pipe diameter. Boot flashing, sealant and fasteners are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One black rubber pipe collar in your chosen size; boot flashing is not included.
Q: Which size do I need?
A: Choose 1-1/2 in., 3 in. or 4 in. to match the vent pipe diameter.
Q: How does it install?
A: Slide the collar into the boot and over the pipe so it seats tightly around the stack.
Q: What is it made of?
A: The collar is made of rubber in a black finish per the listing.
Q: Can it be used without a boot?
A: No; it is an accessory designed to be used inside a boot or jack flashing.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Wil Mar collars are a practical add for larger vent stacks where the boot opening is much wider than the pipe. Seat the collar fully down onto the boot shoulder so it cannot migrate, and check rubber condition during annual roof inspections. For unusually hot flues, verify temperature compatibility before using rubber collars.
Work safely when accessing roof penetrations and follow ladder and fall-protection practices.
Order your Wil Mar pipe collar in the size that matches your vent stack today.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
