The Sime part is based around the cylinder section. A cylinder is a tank that heats up and stores water for the house. It uses immersion heaters in the top and bottom to heat up the water that it stores rather than working off of a heat exchanger like boilers.

Brand Name	Sime
Colour	None
Material	None
Manufacturer Model No	6192907
Wear Type	None
Type	Cylinder Spares
Certifications Met	None
Country of Origin	None
Protects From	None
Waterproof	None
Number of Pockets	None
Waist Size	ac97cc14gw
ERP Rating	Not Applicable
Supplier Part Number	6192907