Description
Overview:
The Gasket, Insulator (RB523 35002 00) is a heat‐resistant sealing plate used on small petrol engines in construction and garden machinery. Made from a durable, fuel‐ and oil‐resistant composite, it sits between the carburettor and intake insulator, or between the insulator and cylinder head, to reduce heat transfer and stop air or fuel leaks. By maintaining a proper seal and manifold vacuum, it helps engines start reliably, idle smoothly, and run at correct operating temperatures. Suitable for routine servicing or repairs, this gasket insulator supports consistent performance on equipment such as generators, plate compactors, water pumps, tillers, lawn mowers, and chippers that rely on accurate intake sealing.
Key Features:
- Heat‐resistant composite material helps limit heat soak into the carburettor
- Fuel‐ and oil‐resistant construction for long service life in harsh conditions
- Forms a reliable seal to prevent air leaks and loss of manifold vacuum
- Helps stabilise idle, throttle response, and overall running quality
- Supports correct mixture control for improved starting and cold performance
- Precise cut‐outs for ports and fixings to aid straightforward installation
- Compatible with common small‐engine layouts used in site and garden tools
- Suitable for preventative maintenance and as a direct service replacement
- Robust against vibration, temperature cycling, and frequent stop‐start use
- Helps protect adjacent parts by acting as a thermal and sealing barrier
Typical Applications:
Used on small petrol engines powering construction and garden equipment, including generators, plate compactors, trench rammers, water pumps, lawn mowers, cultivators, and chippers. Ideal for intake side rebuilds, carburettor changes, resolving vacuum leaks, and routine engine overhauls where a fresh seal and heat isolation are required to maintain efficiency and reliability.
Also known as:
Carburettor insulator gasket, intake insulator gasket, manifold insulator seal, thermal barrier gasket, carb spacer gasket, intake manifold gasket (insulator type), heat isolator gasket, carb base gasket (insulator), inlet insulator seal.
Product Specifications
| L&S Part No. | RB523 35002 00 |
|---|---|
| Unit of Sale | 1 |
| Fits Brands | Robin |
| Key Features | - Heat‐resistant composite limits heat soak into carburettor - Fuel‐ and oil‐resistant for long service life - Forms reliable seal to prevent air leaks - Compatible with common small-engine layouts - Suitable for preventative maintenance and direct replacement |


