Replacing part numbers: 632547, which is a direct replacement for the old or broken one. Compatible with Tecumseh engine carburetors and other engines using the same O-ring dimensions. Each O-ring measures 6.5mm outer diameter, 3.5mm inner diameter, and 1.5mm thickness. Made of nitrile rubber durable construction ensures long-lasting performance even under high-temperature and high-pressure conditions. These carburetor O-rings provide a secure seal for engine carburetors, preventing fuel or air leaks and maintaining proper engine performance., Manufacturer: OTOTEC