About us

Our Team and SL Plastics Philosophy

Conveyor Part Specialists


Spencer Leaver formed SL Plastics in 1991, to fill a niche in the market for engineering plastics, in particular, packaging equipment and conveyor systems.

SL Plastics philosophy still remains unchanged today with our plastics manufacturing engineers based in Suffolk….”that you do not have to be the biggest, to be the best”….and this is reflected by how we win our customers long-term loyalty…..those who were with us 28 years ago are still with us today!

All our clients benefit from our specialist plastics knowledge, expertise and commitment as we continue to grow operations on the principle of the best value – lowest cost – plastic supplier available in the UK today in these challenging financial times.


By working together, we can deliver cost effectiveness across your range of engineered plastics.

  • Are you using the most appropriate materials?
  • Can larger parts be manufactured in an alternative way to reduce material usage and costs?
  • Have parts been designed so that those that will suffer wear and tear are easily replaceable?
  • Is wear and tear being kept to a minimum?
  • Is the guarding on your equipment as efficient as possible?
  • Do you currently use several suppliers for your engineered plastics, guarding, feed-worms and stock conveyor components, and would prefer to have the efficiency and cost savings of having these available from one supplier, with a consistent service and delivery?


We will work with you from initial design, and through production, to ensure that you can benefit from any potential cost savings, whether through a choice of material, design or production quantities. With three heavy duty CNC routers, mills and lathe, we have the capacity and capability to manufacture prototypes and one off’s to large production runs, with consistent accuracy and quality assured.


In 2013 we became a distributor of System Plast conveyor components, extending the quality and reliability of our service so that our customers can source both ‘bought out’ and machined components from a single supplier.

Increasing stock levels to work with each customer individually, we look to provide parts ‘off the shelf’ rather than with lengthy lead times.

We’re pleased to be working with System Plast, whose high-quality components compliment our own production methods and capabilities.


Having seen growth of over 50% in our last financial year, achieved through strong investment in our factory, equipment, staff and supply chains, we grow our stronger market presence through a commitment to each account – the best service from quote to delivery, competitive prices and consistent quality with reliability.

We believe in finding solutions when parts can be manufactured more economically than designed, or when parts are required “yesterday”. Where our competitors say “it can’t be done that quickly”, we ask “when do you really need these parts? We’ll try to find a way to get them done” We are looking forward to another successful year.


Following the merger of the Rexnord & System Plast brands, we were able to extend even further the array of conveyor chains, belts & components that we stock in the UK to support our ever expanding customer base. With innovative products in both ranges, allowing us to serve new markets such as Spiral Conveyors using the Rexnord 6400 KleanTop belt, we now offer the largest selection of quality tried & tested components in the UK

Lets talk about your project today!

01842 820 400