The TFI Racing Rubber Block Off Blank Plug 5/16" ID is a practical temporary sealing solution for situations where a hose, line, or port needs to be closed off quickly. Supplied in a handy pack of 2, these rubber plugs are ideal for workshop use, emergency repairs, and short term testing applications where a secure stop gap is required. With a 5/16" internal diameter, they are suited to compatible openings and provide a simple way to prevent unwanted fluid or air movement during maintenance.

Manufactured from durable rubber, these block off plugs are designed to be easy to install and remove when needed. They are especially useful when a temporary seal is required while diagnosing faults, replacing components, or isolating part of a system. Whether used in automotive, marine, or general mechanical applications, they offer a convenient and effective solution for urgent situations.

Please note these plugs are not intended for permanent use and should only be used as a temporary block off option. They are best suited to situations where a fast, reliable, and non permanent seal is needed before the correct replacement part or repair is completed.

Features & Benefits

• 5/16" internal diameter for compatible temporary block off applications
• Supplied as a pack of 2 for added convenience
• Durable rubber construction for practical short term use
• Ideal for urgent repairs, testing, and maintenance tasks
• Helps seal off hoses, lines, or ports when needed
• Easy to fit and remove for temporary applications