SL Plastics

One Stop Shop for All Conveyor Parts – CNC machining of plastic & metal components, including guarding, & sole UK stockist of SystemPlast components

CNC machining of all plastic components

SL Plastics have been machining and fabricating plastics since 1991, and metal since 2018. Specialists to the container handling, packaging, food processing and conveyor industries, we can meet all your engineering requirements.

We provide a solid, long-term commitment to our customers, which allows us to work together in developing a mutually beneficial relationship, thus adding greater value to their operations. The foundations of this are based upon providing a quick and reliable service, consistent quality, competitive prices and fast delivery.

plastic parts

UK Partner with System Plast

For over 20 years, System Plast has been developing and producing conveyor components for a wide range of applications, and SL Plastics have been machining components for the conveyor, packaging and processing industries. Our partnership shows a unique and committed support for the UK conveyor, packing and food processing industries, ensuring they have access to competitive prices, the best quality products and all with the shortest lead-times.

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Products and Services

When you think plastics, think SL Plastics…… you will not find a better service in the industry!

Products & Services from SL Plastics

With extensive experience in machining plastics for the food processing, packaging and conveyor industries, we offer a level of knowledge and competence that adds value to every customer.

With confidentiality assured, we can consult on the design and manufacture of new products, as well as look again at existing parts, to ensure the most effective materials and manufacturing processes are used to achieve the most competitive prices in the marketplace.

We will explore stock-holding arrangements with you, giving you the security of having parts ‘on the shelf’, as well as the benefits of lower costs from bulk production, but improved cash-flow from monthly or quarterly delivery and invoicing arrangements.

We invite you to visit our factory, where we can demonstrate production methods, and discuss design considerations with your engineers or draughtsmen.

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?

These are all areas that we address regularly with our customers…..SL Plastics brings a level of service and commitment to our customers that saves them time and money, as well as offering the best prices and delivery that you will find in the marketplace.


  • Change-parts
  • Guarding
  • Feed-worms / scrolls
  • Conveyor Components


  • Flame Polishing
  • Engraving
  • Sub-assembly

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About SL Plastics


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.

Unbeatable Delivery Promise

We provide a single contact from initial inquiry through to delivery and will provide a quotation on most jobs within 24hrs.

We will not be beaten on delivery, and pride ourselves on meeting agreed delivery schedules every time, understanding that someone is always awaiting our part, and time becomes money for clients that choose subcontractors who deliver late.

In this respect we’ve forged strong ties with the leading manufacturers and distributors of engineering plastics in the UK, to ensure that we’ve a wide variety of materials available to go straight to machining.

From Design to 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.