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2. Shim (spacer) - Wikipedia

   en.wikipedia.org/wiki/Shim_(spacer)

   Pre-cut metal shims, all with a thickness of 1.00 millimeter. Many materials make suitable shim stock (also often styled shimstock), or base material, depending on the context: wood, stone, plastic, metal, or even paper (e.g., when used under a table leg to level the table surface).

3. Poly(p-phenylene oxide) - Wikipedia

   en.wikipedia.org/wiki/Poly(p-phenylene_oxide)

   This plastic is processed by injection molding or extrusion; depending on the type, the processing temperature is 260–300 °C. The surface can be printed, hot-stamped, painted or metallized. Welds are possible by means of heating element, friction or ultrasonic welding. It can be glued with halogenated solvents or various adhesives.

4. Polytetrafluoroethylene - Wikipedia

   en.wikipedia.org/wiki/Polytetrafluoroethylene

   The coefficient of friction of plastics is usually measured against polished steel. [36] PTFE's coefficient of friction is 0.05 to 0.10, [27] which is the third-lowest of any known solid material (aluminium magnesium boride (BAM) being the lowest, with a coefficient of friction of 0.02; diamond-like carbon being second-lowest at 0.05).

5. List of synthetic polymers - Wikipedia

   en.wikipedia.org/wiki/List_of_synthetic_polymers

   The plastic kits and covers are mostly made of synthetic polymers like polythene, and tires are manufactured from polybutadienes. [1] However, due to the environmental issues created by these synthetic polymers which are mostly non-biodegradable and often synthesized from petroleum, alternatives like bioplastics are also being considered.

6. Plastic - Wikipedia

   en.wikipedia.org/wiki/Plastic

   In 2018 more than 343 million tons of plastic waste were generated, 90% of which was composed of post-consumer plastic waste (industrial, agricultural, commercial and municipal plastic waste). The rest was pre-consumer waste from resin production and manufacturing of plastic products (e.g. materials rejected due to unsuitable color, hardness ...

7. Vulcanized fibre - Wikipedia

   en.wikipedia.org/wiki/Vulcanized_fibre

   This material is a tough, resilient, hornlike material that is lighter than aluminium, tougher than leather, and stiffer than most thermoplastics. The newer wood-laminating grade of vulcanized fibre is used to strengthen wood laminations used in skis , skateboards , support beams and as a sub-laminate under thin wood veneers .