Stainless Steel Flue Liner Cowl.
eBay
1-20Pcs Black Round Plastic Blanking End Cap Caps Tube Pipe Inserts Plug Bung
Aliexpress UK
They can be used for flue gas, ventilation ducts, etc. Designed to protect pipes from precipitation, as well as to increase traction.
eBay
10/25/50pcs 3-25mm PVC vinyl rubber round end cap threaded cap steel pipe plastic pipe rubber protector classification kit
Aliexpress UK
Take a look at this 100% stainless steel rain cap for chimneys. Keep rain, birds and animals out of your chimney! This cap is "New in Box" and is not a second.
eBay
2/4/8 pcs Round Plastic Black Caps Pipe Caps Tube Inserts Bung 12mm 14 16,100mm
Aliexpress UK
Stainless Steel Chimney Cowl.
eBay
Bore 18mm-51.3mm T-type Plug Hollow Silicone Rubber Hole Caps Black Round Holes Sealing Plug Blanking End Caps Dustproof Plugs
Aliexpress UK
【Application】: Rainproof cap is great for roof vents, burner pipe, chimney tubes, flue pipe, fireplace flues, outdoor, etc. 【Enhanced Safe and Cleanliness】: This chimney cap acts as a protection barrier against leaves, debris, birds, and other animals.
eBay
Plastic Black Round Pipe Plug 12~100mm PE Plastic Chair Table Feet Cap Blanking End Cap Tube Pipe Insert Plug Decorative Dust
Aliexpress UK
ROBUST CORNER STONE COVER: Provides stable chimney draught conditions in adverse winds. Large hat ensures effective protection against rain, snow and wind, and protection against nesting birds. Features 304 stainless steel material, which has high durability and is not easy to deform.
eBay
8/24pcs Pipe End Blanking Caps Bung Tube Insert Plug Round Plastic Blanking End Cap Diameter14/16/19/22/25/30/35/40/45/50mm
Aliexpress UK
ROBUST CORNER STONE COVER: Provides stable chimney draught conditions in adverse winds. Large hat ensures effective protection against rain, snow and wind, and protection against nesting birds. Features 304 stainless steel material, which has high durability and is not easy to deform.
eBay
4PCS Plastic Bathroom Kitchen Basin Sink Overflow Cover Ring Insert Replacement Chrome Hole Round Drain Cap Basin Accessory
Aliexpress UK
It is the ideal solution for installing chimney pipes of any shape and size and keeping your chimney clean from debris. Install them easily to improve ventilation and keep debris out. A must-have for any chimney owner!
eBay
7 Colors In Stock PVC Rubber Cap Silicone Cover Plastic Pipe Sleeve Hub Thread Protection Sleeve Round Pipe Cable End Cover
Aliexpress UK