Office chair base – PVC

Product Description

A PVC office chair base is the 5-star, star-shaped foundation that provides stability and mobility for swivel chairs, office chairs, and executive seating. Made from durable polyvinyl chloride plastic, this replacement base is designed to fit standard gas lift mechanisms and accept most caster wheels.

Whether you are repairing a broken chair or upgrading an old one, this PVC base offers an economical, extra-stable solution. It is typically sold as a standalone part, allowing you to replace only what is broken rather than buying an entirely new chair.

The material is chosen for its excellent strength-to-weight ratio, wear resistance, and ability to withstand daily use in demanding office environments.

Office chair base – PVC

What Are the Key Specifications?

When selecting a PVC office chair base, it is crucial to match the dimensions with your existing hardware.

The typical PVC base features a total diameter of 26 to 27 inches, which is the industry standard for most office chairs. The centre hub or housing for the gas lift cylinder is a critical measurement. The standard hole diameter is either 50mm or 52mm, depending on your chair’s gas spring mechanism.

The base’s overall height is typically around 12 cm, providing a stable footprint that will not hit the floor.

Most PVC bases come with pre-installed, hardened steel inserts in the caster sockets. These inserts are designed to prevent the plastic from cracking and to ensure a secure fit for standard caster stems.

What are the Construction Features?

Despite being made of plastic, a quality PVC office chair base is engineered for strength.

The individual struts are often additionally reinforced, meaning they have internal ribbing or a thicker cross-section to prevent flexing under load. This design allows them to support a significant amount of weight, typically up to 250 to 275 lbs.

High-quality PVC bases are designed with a classic star shape that distributes weight evenly across a larger surface area, ensuring a secure and wobble-free seating experience. The surface usually features a polished or textured finish that is easy to wipe clean.

How Do You Replace an Office Chair Base?

Replacing a broken PVC base is a straightforward DIY task that generally requires no special tools.

First, remove the old base. Turn the chair upside down. To remove the old base from the gas lift cylinder, you may need to gently tap the top of the cylinder with a rubber mallet or use a pipe wrench to twist it free. Be careful not to damage the chrome finish.

Second, check compatibility. Ensure your existing gas lift cylinder fits snugly into the new base’s centre hole.

Third, install casters. Insert your existing casters into the five sockets. If the sockets have steel inserts, you should feel a firm “click” when the stems are fully seated.

Fourth, attach the base. Slide the new PVC base onto the gas lift cylinder. Apply pressure until it is fully seated.

Office chair base – PVC

Finally, test. Flip the chair right-side up and test the stability and rolling action.

Which PVC Bases Fit My Chair?

The vast majority of office chairs use a standardised five-point star base.

When searching for a replacement, the most critical factor is the centre hub diameter. Some bases are sold as a complete unit, while others may include matching black casters or glides.

While a smaller diameter base is common for some executive chairs, the standard size for most task chairs is the 26 to 27 inch diameter.

What is the Warranty and Quality?

While some generic brands offer basic replacement policies, many standard PVC bases sold as spare parts come with a standard manufacturer’s warranty against defects.

Customer reviews for PVC replacement bases are generally positive. Many users praise them as a sturdy chair base and a good quality product for refurbishing old chairs.

Office chair base – PVC  available in Mombasa, Kwale, Kilifi, Lamu, Mandera, Marsabit, Isiolo, Meru, Embu, Kitui, Machakos, Makueni, Nyandarua,

Nyeri, Kirinyaga, Murang’a, Kiambu, Turkana, Samburu, Trans Nzoia, Uasin, Gishu, Elgeyo Marakwet, Nandi, Baringo,

Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet, Kakamega, Vihiga, Bungoma, Busia, Siaya, Kisumu, Homa Bay, Migori, Kisii, Nyamira, Nairobi.

In Nairobi you can find them at: Westlands, Dagoretti,  Lang’ata, Starehe, Kamukunji, Embakasi, and Kasarani, Kibera, Mathare,

Eastleigh, Karen, Lavington, Westlands, Parklands, Runda, South C, South, Ngong Road

In Mombasa you can find us at : Nyali, Mwembe Tayari, Majengo, Likoni ,Bamburi, Miritini