SKF 550 VA H v-ring seal

SKF 550 VA H belongs to v-ring 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 550 VA H and any equivalents.

A V-ring seal from the SKF VA H series is a rotary sealing element that fits onto the shaft itself and wipes against a face running perpendicular to it. The V-shaped lip is flexible and works without a spring, so it handles a broad range of shaft speeds and absorbs small amounts of misalignment. In service it keeps grease where it belongs and blocks dust, water and particles from reaching the bearing area.

Reading the code is straightforward once you know the pattern. The digits ahead of the letters give the shaft diameter in millimeters, so 500 VA H fits a 500 mm shaft and 550 VA H fits a 550 mm shaft. The trailing H marks a version with a taller section, which matters when the housing geometry calls for more height. Before ordering, confirm two things: that the number matches your shaft diameter and that there is enough room in the axial direction for the H profile.

You will find these seals in gearboxes, pumps, mixers and conveyors, and in plants handling food, cement, steel or water treatment, where dust, moisture and splashes are part of daily operation. Mounting on the shaft is what makes them practical: a seal can be swapped out without tearing down the whole assembly, which shortens maintenance windows and protects bearings and lubricant in dirty environments.

Selection comes down to three inputs: the peripheral speed at the shaft, the temperature the elastomer will see, and the contaminant you are up against. The lip should sit against the sealing face with light pressure only, since pressing it too hard shortens its life. Shaft-to-face alignment also matters, because more misalignment than the design allows will let the lip lift away. No extra lubrication is needed, and the seal holds by elastic fit rather than adhesives.

V-ring dimensions follow standardized sizes, yet compounds and hardness can differ from one maker to another. If you are swapping out a seal of another origin for an SKF VA H series part, check that shaft diameter and section line up. Our team can point you to equivalents without asking for internal codes, and it is good practice to confirm with your supplier before changing to a seal from a different source.

To get a quote, send the full code on WhatsApp, for example 500 VA H or 550 VA H. We also supply other seals and radial shaft seals if you want to combine items in one inquiry.