SKF STR 19-338-395A hydraulic seal

SKF STR 19-338-395A belongs to hydraulic seal, part of our Seals range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for STR 19-338-395A and any equivalents.

A back-up ring from the SKF STR line sits behind the primary hydraulic seal and keeps it from extruding when pressures run high. Think of it as a mechanical stop that supports the seal lip, so the sealing assembly holds up in demanding cylinders and hydraulic circuits. MR Industrial Accessories supplies this series within its industrial seals range and assists with sizing to match your housing and operating conditions.

The STR prefix marks SKF back-up rings for hydraulic seals. The numeric blocks in each code define the inner diameter and thickness, so a reference such as STR 19-326-395A or STR 19-348-395A points to a distinct size in the same family. The trailing A denotes a construction variant, typically tied to the material or profile. Matching the code against the housing bore and the main seal dimensions is the reliable way to confirm the right ring.

You will find these rings in hydraulic cylinders on farm equipment, road machinery, presses, cranes and power transmission systems. They also appear in metallurgical plants, mining operations and lifting equipment that runs on hydraulic oil at moderate temperatures. In those settings, repeated cycles and elevated working pressures make dependable back-up support essential.

Selection comes down to three inputs: working pressure, fluid temperature and chemical compatibility with the hydraulic oil. During installation, work on a clean, burr-free surface and check that the ring seats properly in its groove. A light lubrication helps the ring slide into place and protects the lip of the main seal from damage. Keeping the cylinder and rod precisely aligned limits wear and helps the system run efficiently.

SKF STR back-up rings can be exchanged with equivalent products from other recognized brands when the nominal dimensions and material are respected. For a quote, it helps to send the complete code along with the housing dimensions so compatibility can be checked. MR Industrial Accessories works with hydraulic seals regularly and can point you to the component that fits your equipment.

To replace an SKF STR back-up ring, send the code through WhatsApp or email and the team will respond promptly. MR Industrial Accessories also suggests equivalents and helps with selection when the original reference is unclear. Reach out and we will help you keep your equipment running.