Toilet outlet flange gasket GEBERIT 90 mm PE, model 387.282.00.1

Toilet outlet flange gasket GEBERIT 90 mm PE, model 387.282.00.1 is a replacement gasket designed to create a reliable seal between the ceramic toilet outlet (horn) and the drainage pipe. Manufactured from polyethylene (PE), this 90 mm gasket adapts to standard outlet dimensions to help prevent leaks, odors, and water ingress around the toilet connection. It is intended for installation and repair work on toilet systems that require a 90 mm PE outlet gasket and is compatible with typical ceramic-to-plastic pipe connections.

Advantages

This PE gasket provides a durable and flexible sealing surface that resists deformation and maintains contact under normal toilet loading. Its material properties make it resistant to common household chemicals and moisture, while the 90 mm sizing matches standard outlet diameters to simplify replacement tasks. The gasket’s design focuses on ensuring correct waste flow alignment and minimizing the risk of leaks when fitted according to installation guidelines.

Suitable for

• Replacement of worn or damaged toilet outlet gaskets with a 90 mm diameter
• New toilet installations requiring a 90 mm PE outlet gasket
• Repair work on ceramic-to-plastic drainage connections in residential and commercial bathrooms
• Plumbing maintenance where a flexible, moisture-resistant seal is needed

Key specifications

• Material: polyethylene (PE)
• Nominal outlet diameter: 90 mm
• Application: toilet outlet (horn) to drainage pipe seal
• Compatibility: intended for standard ceramic toilet outlets and common plastic drainage pipes
• Function: flexible seal to prevent leaks and odors

How to use

Ensure the toilet and drain surfaces are clean and free of old sealant or debris before installation. Position the gasket onto the ceramic outlet or drainage pipe as specified by the toilet manufacturer, aligning the 90 mm opening with the outlet horn. Carefully lower the toilet onto the flange or connect the outlet to the pipe, maintaining even pressure to seat the gasket uniformly. Check the connection for proper alignment and tighten any mounting hardware to the manufacturer’s recommended torque. After installation, perform a water test to confirm there are no leaks.

Usage recommendations

Use the gasket only with compatible 90 mm outlet interfaces and follow the toilet manufacturer’s installation instructions. Replace the gasket if it shows signs of cracking, deformation, or persistent leakage. Avoid exposing the gasket to excessive heat or aggressive solvents not intended for polyethylene materials.