Fernco Inc FTS-4 Wax Free Toilet Seal 4 Inch

Product Description

The FERNCO INC FTS-4 is a wax-free toilet seal designed to create a reliable, leak-free connection between a toilet and its drain flange. A strong, flexible adhesive bonds directly to the bottom of the toilet, eliminating the mess and uncertainty associated with traditional wax rings. The seal fits 4-inch drain openings and accommodates floor surfaces that sit up to 0.75 inches above the toilet flange, making it well-suited for installations where the finished floor rises above the flange face. Licensed plumbers and experienced DIYers install this seal as a direct replacement for standard wax ring setups.

This seal is intended for residential and light commercial toilet installations on any floor type, including wood subfloor, ceramic tile, linoleum, and carpet. It is especially useful in in-floor radiant heat installations, where a traditional wax ring may soften over time due to elevated floor temperatures. The FTS-4 removes the guesswork from achieving a positive seal on raised or uneven finished floors.

Key Features

• Wax-free construction eliminates mess during installation and removal
• Fits 4-inch drain openings on standard toilet flanges
• Strong, flexible adhesive bonds to the bottom of the toilet for a consistent seal
• Accommodates finished floors raised up to 0.75 inches above the toilet flange
• Compatible with wood, tile, linoleum, and carpet floor surfaces
• Suitable for in-floor radiant heat installations where wax seals may degrade

Compatibility

Designed as an OEM-style replacement seal for residential and light commercial toilets with 4-inch drain flanges installed on all common floor types.

Installation Notes

Installation is performed by a licensed plumber or qualified tradesperson in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply, flush and disconnect the toilet before beginning work. Clean the flange and toilet horn thoroughly before applying the seal to ensure full adhesive contact. Do not reuse the seal once the toilet has been set and the adhesive has bonded.

Technical Specifications

• Drain Size: 4 inches
• Maximum Floor Rise Above Flange: 0.75 inches
• Compatible Floor Types: Wood, tile, linoleum, carpet
• Seal Type: Wax-free flexible adhesive
• Weight: 12.8 pounds
• Unit of Measure: EA
• Package Quantity: 20

Standard Information

• Brand: FERNCO INC
• Manufacturer Part Number: FTS-4