Repair kits
Frequently asked questions
Should I buy an O-ring set or a cylinder seal kit?
An O-ring set is a box of common sizes kept as maintenance stock for static seals, not tied to any machine. A cylinder seal kit contains exactly the seals for one cylinder model and is used at overhaul. A workshop usually needs both for different purposes.
What is the benefit of a kit over buying seals individually?
A kit gathers every part in the same material and batch, avoiding the situation where the machine is opened and one small O-ring turns out to be missing. Where downtime must be short, having the full set on hand matters more than the price difference.
How is the material in a kit chosen?
By the medium and temperature of the equipment being repaired: NBR kits for mineral oil at normal temperature, FKM for hot oil or chemicals, EPDM for water and steam. Settle the material before the sizes, since the right size in the wrong material still fails quickly.
What information is needed to pick the right repair kit?
Send the machine make, model and serial number where available, together with the part number marked on the unit being repaired. Photos of the nameplate and of the old seals laid next to a ruler make matching faster. Also state the working medium and temperature so the kit material can be checked.
How should repair kits be stored before use?
Keep the kit in its sealed original packaging in a dark, cool place so the rubber parts are not aged by ozone and heat. Do not break a kit open to borrow parts for another machine, because it will be incomplete when the original machine needs repair. Write the receiving date on the box and use the oldest kits first.
Should the old parts be kept when fitting a new kit?
Keep the old seals in a bag labelled with the machine and date until the machine runs reliably. They let you compare profiles if a new part looks unfamiliar, and they show the failure cause so the root problem can be fixed. Once the test run passes, the old parts can be discarded.
