Installing the toilet seat: what to look out for when fastening and fitting
A toilet seat that doesn’t fit is a daily annoyance. Incorrectly dimensioned fixing distances, a seat that slips or a shape that does not match the toilet ceramics are common mistakes when buying. However, with the right measurements and a little basic knowledge, installation can be done easily and safely.
The most important dimension: the fixing distance
The fixing distance, i.e. the distance between the two fixing bolts, is the key dimension when purchasing a toilet seat. The European standard is 155 mm center distance. Most standard toilet seats fit this dimension. If you want to be sure, measure before you buy: Tape measure from center bolt to center bolt.
Many modern toilet seats have an adjustment option for the fixing distance, which can be varied within a range of around 140 to 170 mm. This makes replacement considerably easier, as not every WC ceramic appliance corresponds exactly to the standard value. The toilet seat range at S.I.T. Sanitärtechnik includes models with adjustable fixings.
Shape and design: O-shape or U-shape?
WC seats come in two basic shapes: the closed O-shape and the open-front U-shape. The O-shape is most commonly found in the private sector. The U-shape is preferred in public sanitary facilities and care facilities because it makes cleaning easier and offers hygienic advantages.
The shape of the toilet seat must match the ceramic. An O-shaped seat on a ceramic appliance designed for U-shaped seats will survive installation, but will look inharmonious and will not fit neatly at the front. If in doubt, a close look at the ceramic or the toilet manufacturer’s original documentation will help.
Soft-close and quick-release: practical additional functions
Modern toilet seats often offer two practical additional functions: Soft-close and quick-close. Soft-close means that the lid cannot slam shut, but closes gently and softly. This is gentle on the material and is a real gain in comfort, especially in family households with children.
The quick-release fastener makes it possible to remove the toilet seat without tools, clean it thoroughly and reinsert it. Dirt and limescale collect under the hinge in places that are difficult to reach without removing the seat. For the hygiene-conscious and for facilities with increased cleaning requirements, the quick-release fastener is a useful feature.
Conclusion: Installing a toilet seat with the right dimensions and functions
If you check the fixing distance and seat shape before buying, you can avoid the most common installation errors. Additional functions such as soft-close and quick-release fasteners noticeably increase comfort and hygiene in everyday life. S.I.T. Sanitärtechnik offers toilet seats in various designs. If you have any questions about fit or installation, please contact us.
