Blog
Technical guides, advice and news on hydraulic and pneumatic seals: choosing, materials, maintenance and applications.
Hidrogarant: the online warehouse for hydraulic and pneumatic seals
A catalogue of 160,000 references, 80,000 items in stock and a team that helps you choose the right seal: here is who we are and how we work.
Read article →
Rod seals: how to choose the right one
The rod seal is the first barrier against oil leaking out of the cylinder. Here is how to choose it according to pressure, speed, temperature and groo...
Read article →
Piston seals: single or double acting?
The piston seal separates the two chambers of the cylinder and turns pressure into force. Here are the differences between single and double acting an...
Read article →
Wiper seals: the first line of defence for a hydraulic cylinder
A wiper costs little but protects the whole cylinder: it keeps dust, mud and water from entering with the rod. Here is how to choose the right one.
Read article →
O-rings: a guide to sizes, cross-sections and materials
The O-ring is the simplest and most widespread seal in the world, but choosing it well requires attention to inner diameter, cross-section, material a...
Read article →
Guide rings: why they are essential in a cylinder
Guide rings do not seal anything, but without them no seal lasts long. Find out what they do, which materials exist and how to choose them.
Read article →
NBR, FKM, PTFE, polyurethane: which material for your seal?
The right profile is not enough: the material must also suit the fluid, temperature and loads. Here is an overview of the most used materials and when...
Read article →
PTFE filled with bronze, glass or carbon: differences and uses
Pure PTFE slides beautifully but deforms under load. Fillers improve its strength and life: here is how performance changes with bronze, glass and car...
Read article →
FDA silicone O-rings: when you need them and how to choose
In food and beverage machinery a seal must not only seal but also be suitable for contact with the product. Here is what to know about FDA silicone O-...
Read article →
How to measure a hydraulic cylinder to order the right seals
Ordering the wrong seals wastes time and money. With a caliper and a few precautions you can take all the necessary measurements: here is how, step by...
Read article →