Ultra Flex

A two-component polyester filler for filling small uneven spots and scratches on plastic used in the automotive market.

scroll me

Features & Benefits

  • Highly elastic multi-functional filler designed for use on plastic substrates, including polypropylene - easy application and modelling
  • Built-in sanding detector - changes its colour during sanding to make defects visible
  • Filler can be very finely sanded to an almost non-existent film - gives a smooth join between base and filler
  • Soft and easy to sand - does not bounce or clog the paper
  • Can be over-painted with all leading paint systems - use with confidence


1 kg Dark grey 86957 SDS TDS


KENT Ultra Flex is manufactured under vacuum to give an ultra smooth, pore free finish. It is made with soft resin, making it easy to sand and giving good flexibility.

KENT Ultra Flex is used for filling holes and imperfections on plastic surfaces. With Ultra Flex, light damage such as stone chips or thin scratches can be closed directly on the coating and thus also serves as a fine filler in the plastic area. Also adheres to metal substrates, including steel, galvanized steel and aluminium, as well as polyester surfaces.


1. The substrate must be load-bearing, sanded, clean, dry and free of residues.

2. Throughly mix putty and 2-3% of BPO hardener by weight until a homogeneous shade of colour is achieved.

3. The mixture has a pot-life of about 3 to 5 minutes at 20 °C.

4. After 20 minutes the bodyfiller can be sanded: hand - machine dry sanding use P120 - P320. The hardening process is accelerated by heat and delayed by cold, not recommended to use below 10°C.