Ideal O-Ring 25.0mm I/D x 4.0mm 003248

The Ideal 003248 is a circular sealing O-ring with a 25.0mm internal diameter and a 4.0mm cross-section, produced in MN70 compound. It is a service part used within Ideal heating appliances to seal a joint between mating components and prevent water or air escaping under pressure. The ring sits in a machined groove or recess and is compressed when the assembly is tightened, forming the seal.

• Visible weeping or a water trail around the joint the ring seals
• The ring has hardened, cracked or gone brittle with age and heat cycling
• The ring has flattened or taken a set and no longer springs back when removed
• Scale or debris has cut into the sealing face, leaving a path for water to pass
• Repeated pressure loss or air ingress traced back to the sealed joint

• Check the GC number on the appliance data badge against the compatibility list to confirm the correct ring for your model
• Confirm the internal diameter and cross-section of the ring you are removing match 25.0mm x 4.0mm, as similar sizes are used elsewhere in the same appliance
• If the joint uses more than one seal, check whether the other gaskets and washers on the assembly also need replacing at the same time
• This part is not classified as a gas part
• This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.