GLASGOW +44 (0) 141 620 1666
INVERNESS +44 (0) 1463 238 673
INVERNESS +44 (0) 1463 238 673
William Johnston & Company Limited supply a variety of engineering plastic products for use across many industrial applications.
Please see the details below.
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TUBE
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| ENGINEERING PLASTIC | FUNCTIONALITY | APPLICATIONS |
| ABS | Outstanding impact resistance Good machinability Easy to thermoform Easy to bond with adhesives Strong and stiff Low cost |
Display trays, Storage cases, Display bases, Product holders, Point-of-purchase displays Thermoformed displays Display components Models and prototypes Machine housings, guards, and covers Instrument panels Thermoformed trays and tote bins. |
| ACETAL | Strong and stiff Excellent machinability Good dimensional stability Low moisture absorption Excellent wear properties in both wet and dry environments Low friction Good chemical resistance |
Bearings and bushings Pump and valve parts Manifolds Gears Jigs and fixtures Packaging machinery parts Food processing machinery parts Electrical components |
| ACRYLIC | Optically clear Strong and stiff Easy to fabricate Easy to solvent bond |
Signs Point-of-purchase (POP) displays Sign and graphic holders Merchandisers, Brochure holders Table top displays, Shelves, Exhibits Fixtures, Architectural glazing Skylights, Boat windshields Aircraft canopies, Transparent manifolds |
| HDPE | Easy to weld using thermoplastic welding equipment Low moisture absorption Excellent surface for food preparation Good chemical resistance Low cost |
Chemical tanks Water pipe flanges (HDPE pipe grade) Cutting boards for food preparation Playground equipment Marine construction Pile guards, Bumpers, Anti-skid surfaces. |
| LDPE | Soft and pliable Easy to weld and heat seal Good chemical resistance Low cost |
Orthotics Prosthetics |
| NYLON 6 | Excellent bearing and wear properties Strong and stiff Good chemical resistance Easy to machine Reduced noise, weight, and wear of mating parts compared with many traditional metal bearing materials |
Bearings and bushings Gears Wear pads Packaging machinery components Food processing machinery components Wheels Rollers Seals and gaskets |
| NYLON 6.6 | High mechanical strength, great rigidity, and good stability under heat. It has a higher melting point than Nylon 6, better mechanical properties and greater hardness. It has lower rate water absorption and is therefore more suited for components that have to meet close tolerances and is well suited for machining on automatic lathes. |
Bearings and bushes Gears Wear pads Packing machinery components Food processing machinery components Ball bearing cages Electro-insulating elements |
| PBT | Excellent chemical resistance including resistance to many CIP (clean in place) wash-down solutions Low moisture absorption Excellent wear resistance, even in wet environments Excellent machining characteristics Stain resistance Internally lubricated bearing grades |
Valves Filler pistons Bearings and bushings Gears Wear pads Packaging machinery parts Food processing machinery components Wheels Rollers Electrical components |
| PEEK | Strong and stiff plastic Outstanding chemical resistance Good mechanical properties at elevated temperatures Resistant to hot water and steam Bearing grade PEEK has excellent wear characteristics UL 94 V-0 flammability rating (1.5mm) Very low smoke and toxic gas emissions when exposed to flame |
Semiconductor machinery components Aerospace parts Seals Pump and valve components Bearings and bushings (bearing grade PEEK) Electrical components Medical instrument parts Food processing machinery components |
| PET | Strong and stiff Excellent chemical resistance Resistant to many CIP (clean in place) wash-down solutions Low moisture absorption Low thermal expansion Excellent wear characteristics, even in wet environments Stain resistance |
Valve components Manifolds Filler pistons Bearings and bushings Wear pads Packaging and machinery parts Food processing machinery components Wheels Rollers Electrical components |
| PETG | Outstanding thermoforming characteristics, particularly in deep draw applications Does not require drying prior to thermoforming Good impact resistance Clear Lower cost alternative to polycarbonate Less brittle than acrylic Superior chemical resistance when compared with many other transparent plastics Easy to fabricate Rapid thermoforming cycle times Brake formable (up to 0.080" thickness) |
Signs Sign and graphic holders Point of purchase (POP) displays Merchandisers Table top displays Table tents Product displays Trays |
| POLYCARBONATE | Outstanding toughness Good optical clarity Strong and stiff Easy to fabricate Thermoforms well after drying Replaces acrylic and PETG in high impact applications UL 94 V-0 flammability rating (5.6mm thickness, clear) Brake formable (up to 2.54mm thickness) Easy to solvent bond |
Signs Sign and graphic holders Point-of-purchase (POP) displays Product displays Merchandisers Risers Table top displays Table tents Exhibits Shelves Fixtures Machine guards Architectural glazing Skylights Transparent manifolds Site glasses Semiconductor machinery components |
| POLYPROPYLENE | Easy to weld using thermoplastic welding equipment Low moisture absorption Good chemical resistance Low cost Extremely tough (copolymer) Excellent aesthetic properties Easy to fabricate |
Chemical tanks Plating tanks Fire truck water tanks (copolymer polypropylene) Cutting boards for food preparation Semiconductor equipment cabinets and work surfaces |
| POLYURETHANE | Absorbs impact and vibration Resilient and tough Abrasion resistant Can be cast into a variety of shapes and finished parts Can be cast directly onto metal wheels and rollers |
Bumpers Wheel covers Roller covers Snow plow edges Screen printing squeegees Packaging machinery components Assembly fixtures, checking fixtures, and storage fixtures |
| PTFE | Outstanding chemical resistance Extremely low friction Soft and formable Good bearing and wear properties (bearing grade) Good weathering resistance Performs well at elevated temperatures |
Seals and gaskets Valve and fitting components Pump parts Manifolds Semiconductor equipment Scientific equipment Medical equipment Chemical resistant tubing Bearings and bushings (bearing grades) |
| PVC | Strong and stiff Low cost Easy to weld using thermoplastic welding equipment Easy to join using solvents or adhesives |
Welded tanks Manifolds Valve and pump housings Fittings Piping systems Cabinets and working surfaces |
| PVDF | Excellent chemical resistance High purity Easy to weld using thermoplastic welding equipment Good UV stability Flame resistant Abrasion resistant |
Chemical tank liners Semiconductor equipment components Pump and valve parts |
| UHMW-PE | Extremely tough and durable Low friction Excellent abrasion resistance Good chemical resistance Low moisture absorption Easy to fabricate |
Chute liners and hopper liners Wear strips Star wheels Idler sprockets Packaging machinery components Food processing machinery components Marine construction Pile guards Bumpers Anti-skid surfaces |
For more information about our Engineering Plastic products that are available world wide, contact us on +44 (0)141 620 1666, Email us or simply complete our online Enquiry Form.
