Leading Suppliers Nationally for Vinyl Square End Caps

1. Sinclair & Rush Ltd: A leading supplier of vinyl square end caps offering a variety of sizes and colors. They cater to a wide range of industries.

2. Essentra Components: Known for their wide range of protective caps and plugs, Essentra Components also offers vinyl square end caps in various sizes.

3. BPF: British Plastics Federation represents a number of companies in the UK that supply vinyl square end caps. They can provide a list of their members who offer these products.

Feel free to explore these companies further to find the best supplier that suits your needs.