Package Amount Unitprice
250 ml (Price per liter: 112,88 €/l) Shipping weight: 0.296 kg 28,22 €*
3 x 250 ml (Price per liter: 98,72 €/l) Shipping weight: 0.888 kg 74,04 €*
5 x 250 ml (Price per liter: 90,34 €/l) Shipping weight: 1.48 kg 112,93 €*
12 x 250 ml (Price per liter: 82,84 €/l) Shipping weight: 3.552 kg 248,52 €*
MATHY DropStop

DropStop is a highly effective sealing additive.

It helps regain flexibility of brittle, leaky rubber type shaft seals in engines, transmissions, rear axles and power steering of cars and any other kind of machinery. DropStop sealing additive prevents oil loss. Not suitable for plain gaskets or for gaskets and seals made from metal, felt, or graphite coated asbestos etc. MATHY-TA is free of solid matter, and thus causes no deposits.

Product Properties

• Restoration of ductility of leaky and brittle shaft seals
• Stops slight oil leaks
• Long-term balance of seal wear
• Prevents expensive repairs
• Prevents leaks
• Protects the environment


Use DropStop with a mixing ratio of 1:16. E.g. add 250 ml of DropStop to 4 L of engine oil.


Simply add DropStop to the engine oil. Afterwards the engine should be brought to operation temperature. Additions can be made at any time.

Due to the fact that elastomers are made of different materials and depending on the age of seals, it may in some cases take up to two weeks to obtain the full effect of DropStop.


  • H317: May cause an allergic skin reaction.
  • H373: May cause damage to organs through prolonged or repeated exposure.
  • H336: May cause drowsiness or dizziness.
  • H412: Harmful to aquatic life with long lasting effects.

Gafahrgut: GHS07 und GHS08